sendly-now

Sendly provides an Email API enhanced with AI capabilities for both transactional and marketing communications. It offers features such as scoped API keys, phishing screening, visual workflow builders, and integrations with Claude AI. Developers can send emails, manage campaigns, and verify domains through a unified API platform.

sendly-now publishes 27 API contracts indexed on the APIs.io network, including Account API, Analytics API, API Keys API, and 24 more. Tagged areas include Email, API, Transactional Email, Marketing Campaigns, and Workflow Automation.

The sendly-now catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

sendly-now’s developer surface includes authentication, API reference, documentation, pricing, support, and 32 more developer resources.

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67.6/100 exemplar Agent 62/100 agent native Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 5 Agent Skills

EmailAPITransactional EmailMarketing CampaignsWorkflow Automation AI Integration Developer Platform

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 67.6/100 · exemplar

Contract Quality 15.0 / 21

Developer Ergonomics 8.4 / 17

Access Clarity 12.2 / 17

Operational Transparency 4.4 / 11

Contract Governance 8.1 / 10

Discoverability 5.6 / 9

Regulatory Posture 6.8 / 15

Agent readiness — 62/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

2 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 49.3 — up to +10.1 composite points
Operational Transparency scores 39.5 — up to +7.9 composite points
Contract Quality scores 70.7 — up to +7.3 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/sendly-now/apis.yml: open an issue on github.com/api-evangelist/sendly-now to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 27

Individual APIs this provider publishes, each with its own machine-readable definition.

sendly-now Account API

The signed-in person's own account: profile, notification channels, data export, deletion, and the project the dashboard opens on. For a session or an agent acting for the perso...

sendly-now Analytics API

Aggregate sending and engagement metrics. Every read is bounded to a window of at most 90 days and cached for 15 minutes.

sendly-now API Keys API

Project-scoped sending/API credentials. All four operations are documented; minting and rotation answer with a one-time reveal link rather than the secret, so a delegated caller...

sendly-now Billing API

The project's plan, its metered Stripe subscription, and the two Stripe-hosted pages (Checkout and the billing portal). An agent gets a single-use `/go/` link to a hosted page r...

sendly-now Campaigns API

Bulk sends to a list, segment, or filtered audience. Served by the `/api/v1` surface (bare payloads, RFC 9457 errors).

sendly-now Compatibility API

Drop-in endpoints for the Resend, SendGrid, Postmark, Mailgun and Plunk send APIs, so an existing integration can switch by changing its base URL and key. They are NOT the nativ...

sendly-now Connections API

The services a project or a person is connected to: the project's Slack workspace, the domains whose DNS DoDomain manages, and the AI apps connected to a person's account. A con...

sendly-now Contacts API

Manage subscribers and per-contact custom data.

sendly-now Deliverability API

Why mail from one of your domains is or is not arriving: DNS identity, recent delivery outcomes, and one recipient's suppression state, composed into findings.

sendly-now Domains API

sendly-now Emails API

Send transactional email and inspect deliveries.

sendly-now Events API

Track custom contact events from your application.

sendly-now Lists API

Self-serve list membership. These two endpoints accept sending-only keys so they can back a public subscribe/unsubscribe form; list management itself is dashboard-only.

sendly-now Mailboxes API

Real receiving mailboxes on your verified domains. Creating one changes how that domain's mail is routed; the messages a mailbox receives are not part of this API.

sendly-now Members API

A project's members and their roles. A project is the team: a member is added by the email of an existing Sendly account and joins at once, so there are no pending invitations. ...

sendly-now Organizations API

The organizations a person belongs to, each a group of projects: their overview and the merged inbox across their mailboxes. An organization never widens project access; every f...

sendly-now Projects API

The project a credential is scoped to, and creating new ones. Configuring an existing project stays a dashboard action.

sendly-now Segments API

Saved audiences — a `DYNAMIC` filter re-evaluated on read, or a `STATIC` membership list. Served by the `/api/v1` surface (bare payloads, RFC 9457 errors).

sendly-now Support API

Write to Sendly's support team and list what was written, and appeal a project's sending suspension. A ticket reaches the same inbox as the dashboard's support form.

sendly-now Suppression API

Project-scoped suppression list. Hard bounces and complaints land here automatically.

sendly-now Templates API

Reusable email templates referenced by send operations.

sendly-now Topics API

The subjects you mail about, and what each contact has said about them. A topic answer is a standing decision rather than an audience filter: it applies whatever audience a camp...

sendly-now Usage API

Current email usage against the monthly and daily limits the platform enforces.

sendly-now Validation API

Bulk email validation, billed per address: a bounded synchronous batch, and background runs over a whole list. Distinct from `Verify`, which is the one open, unauthenticated, si...

sendly-now Verify API

Open email-validation endpoint (no auth required). Used by the marketing-site verifier.

sendly-now Webhooks API

User-managed outbound webhooks for email and contact events.

sendly-now Workflows API

Event-triggered automations and the contact runs through them. Served by the `/api/v1` surface (bare payloads, RFC 9457 errors).

Scroll for all 27

Agent Skills 5

Packaged agent skills for driving this provider's APIs from an AI assistant.

sendly-now-billing-summary

AGENT SKILL

sendly-now-create-and-retrieve-contact

AGENT SKILL

sendly-now-create-configure-webhook

AGENT SKILL

sendly-now-export-account-data

AGENT SKILL

sendly-now-org-overview

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Sendly Now Plans Pricing

2 plans

PLANS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Sendly Now Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Sendly Now Context

120 classes · 246 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

sendly-now API Rules

18 rules · 13 errors 4 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

ComposeMailboxMessage

6 properties

JSON SCHEMA

DomainLogoReadinessV1

5 properties

JSON SCHEMA

Domain

19 properties

JSON SCHEMA

MailboxConversationReplyBody

2 properties

JSON SCHEMA

SendEmail

15 properties

JSON SCHEMA

SendEmailV1

15 properties

JSON SCHEMA

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sendly Now Authentication

1 scheme

SECURITY

Sendly Now Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Sendly Now Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Sendly Now Scopes

50 scopes · authorizationCode

50 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Sendly Now Agentic Access

550 operations · 306 acting · 10 human-in-the-loop

550 operations · 306 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 9

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Scroll for all 9

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 10

Authentication, authorization, and security posture

Security

Authentication

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

TrustCenter

OAuthScopes

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 10

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: sendly-now
name: sendly-now
image: https://sendly.now/og-image.png
description: Sendly provides an Email API enhanced with AI capabilities for both transactional and marketing communications.
  It offers features such as scoped API keys, phishing screening, visual workflow builders, and integrations with Claude AI.
  Developers can send emails, manage campaigns, and verify domains through a unified API platform.
url: https://artifacts.apis.io/sendly-now/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Email
- API
- Transactional Email
- Marketing Campaigns
- Workflow Automation
- AI Integration
- Developer Platform
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/sendly-now-agentic-access.yml
- type: Plans
  url: plans/sendly-now-plans-pricing.yml
- type: Spectral
  url: rules/sendly-now-rules.yml
- type: JSONLD
  url: json-ld/sendly-now-context.jsonld
- type: Vocabulary
  url: vocabulary/sendly-now-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Webhooks
  url: asyncapi/sendly-now-webhooks.yml
- type: DataModel
  url: data-model/sendly-now-data-model.yml
- type: Idempotency
  url: conventions/sendly-now-conventions.yml
- type: Conventions
  url: conventions/sendly-now-conventions.yml
- type: Security
  url: security/sendly-now-vulnerability-disclosure.yml
- type: Authentication
  url: authentication/sendly-now-authentication.yml
- type: ErrorCatalog
  url: errors/sendly-now-problem-types.yml
- type: Conformance
  url: conformance/sendly-now-conformance.yml
- type: LLMsTxt
  url: llms/sendly-now-llms.txt
- type: SecurityTxt
  url: well-known/sendly-now-security.txt
- type: SecurityTxt
  url: well-known/sendly-now-chatgpt-security.txt
- type: SecurityTxt
  url: well-known/sendly-now-app-security.txt
- type: SecurityTxt
  url: well-known/sendly-now-api-security.txt
- type: WellKnown
  url: well-known/sendly-now-well-known.yml
- type: Hosts
  url: hosts/sendly-now-hosts.yml
- type: Vendors
  url: vendors/sendly-now-vendors.yml
- type: TrustCenter
  url: https://sendly.now/trust
- type: StatusPage
  url: https://status.sendly.now/
- type: Login
  url: https://app.sendly.now/auth/login
- type: GitHubOrganization
  url: https://github.com/DevinoSolutions
- type: DeveloperPortal
  url: https://docs.sendly.now\\\
- type: APIReference
  url: https://sendly.now/changelog
- type: OAuthScopes
  url: scopes/sendly-now-scopes.yml
- type: VulnerabilityDisclosure
  url: security/sendly-now-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/sendly-now-domain-security.yml
- type: Website
  url: https://sendly.now/
- type: Documentation
  url: https://docs.sendly.now/
- type: Pricing
  url: https://sendly.now/pricing
- type: TermsOfService
  url: https://sendly.now/terms
- type: PrivacyPolicy
  url: https://sendly.now/privacy
- type: Support
  url: https://app.sendly.now/support
apis:
- aid: sendly-now:sendly-now-account-api
  name: sendly-now Account API
  description: 'The signed-in person''s own account: profile, notification channels, data export, deletion, and the project
    the dashboard opens on. For a session or an agent acting for the person, never an API key. Deleting is a 30-day window
    that signing in again cancels.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-analytics-api
  name: sendly-now Analytics API
  description: Aggregate sending and engagement metrics. Every read is bounded to a window of at most 90 days and cached for
    15 minutes.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Analytics
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-analytics-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-api-keys-api
  name: sendly-now API Keys API
  description: Project-scoped sending/API credentials. All four operations are documented; minting and rotation answer with
    a one-time reveal link rather than the secret, so a delegated caller never receives a key it could use.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - API Keys
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-api-keys-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-billing-api
  name: sendly-now Billing API
  description: The project's plan, its metered Stripe subscription, and the two Stripe-hosted pages (Checkout and the billing
    portal). An agent gets a single-use `/go/` link to a hosted page rather than its URL.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Billing
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-billing-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-campaigns-api
  name: sendly-now Campaigns API
  description: Bulk sends to a list, segment, or filtered audience. Served by the `/api/v1` surface (bare payloads, RFC 9457
    errors).
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-campaigns-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-compatibility-api
  name: sendly-now Compatibility API
  description: 'Drop-in endpoints for the Resend, SendGrid, Postmark, Mailgun and Plunk send APIs, so an existing integration
    can switch by changing its base URL and key. They are NOT the native API: each speaks its vendor''s request body, auth
    header and error shape (not RFC 9457), covers only the send path, and refuses vendor features Sendly has no equivalent
    for. New code should use the native `Emails` operations.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Compatibility
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-compatibility-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-connections-api
  name: sendly-now Connections API
  description: 'The services a project or a person is connected to: the project''s Slack workspace, the domains whose DNS
    DoDomain manages, and the AI apps connected to a person''s account. A connection starts in the person''s browser through
    a one-time link.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Connections
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-connections-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-contacts-api
  name: sendly-now Contacts API
  description: Manage subscribers and per-contact custom data.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-contacts-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-deliverability-api
  name: sendly-now Deliverability API
  description: 'Why mail from one of your domains is or is not arriving: DNS identity, recent delivery outcomes, and one recipient''s
    suppression state, composed into findings.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Deliverability
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-deliverability-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-domains-api
  name: sendly-now Domains API
  description: Register sending domains and manage SES verification.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Domains
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-domains-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-emails-api
  name: sendly-now Emails API
  description: Send transactional email and inspect deliveries.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Emails
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-emails-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-events-api
  name: sendly-now Events API
  description: Track custom contact events from your application.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-events-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-lists-api
  name: sendly-now Lists API
  description: Self-serve list membership. These two endpoints accept sending-only keys so they can back a public subscribe/unsubscribe
    form; list management itself is dashboard-only.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Lists
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-lists-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-mailboxes-api
  name: sendly-now Mailboxes API
  description: Real receiving mailboxes on your verified domains. Creating one changes how that domain's mail is routed; the
    messages a mailbox receives are not part of this API.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Mailboxes
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-mailboxes-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-members-api
  name: sendly-now Members API
  description: 'A project''s members and their roles. A project is the team: a member is added by the email of an existing
    Sendly account and joins at once, so there are no pending invitations. For a session or an agent acting for a project
    admin, never an API key.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Members
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-members-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-organizations-api
  name: sendly-now Organizations API
  description: 'The organizations a person belongs to, each a group of projects: their overview and the merged inbox across
    their mailboxes. An organization never widens project access; every figure covers only the projects the person is a member
    of. For a session or an agent acting for the person, never an API key.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-organizations-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-projects-api
  name: sendly-now Projects API
  description: The project a credential is scoped to, and creating new ones. Configuring an existing project stays a dashboard
    action.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-projects-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-segments-api
  name: sendly-now Segments API
  description: Saved audiences — a `DYNAMIC` filter re-evaluated on read, or a `STATIC` membership list. Served by the `/api/v1`
    surface (bare payloads, RFC 9457 errors).
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Segments
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-segments-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-support-api
  name: sendly-now Support API
  description: Write to Sendly's support team and list what was written, and appeal a project's sending suspension. A ticket
    reaches the same inbox as the dashboard's support form.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Support
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-support-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-suppression-api
  name: sendly-now Suppression API
  description: Project-scoped suppression list. Hard bounces and complaints land here automatically.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Suppression
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-suppression-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-templates-api
  name: sendly-now Templates API
  description: Reusable email templates referenced by send operations.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-templates-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-topics-api
  name: sendly-now Topics API
  description: 'The subjects you mail about, and what each contact has said about them. A topic answer is a standing decision
    rather than an audience filter: it applies whatever audience a campaign selects, so it cannot be routed around by choosing
    a different one.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Topics
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-topics-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-usage-api
  name: sendly-now Usage API
  description: Current email usage against the monthly and daily limits the platform enforces.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-usage-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-validation-api
  name: sendly-now Validation API
  description: 'Bulk email validation, billed per address: a bounded synchronous batch, and background runs over a whole list.
    Distinct from `Verify`, which is the one open, unauthenticated, single-address endpoint the marketing site calls.'
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Validation
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-validation-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-verify-api
  name: sendly-now Verify API
  description: Open email-validation endpoint (no auth required). Used by the marketing-site verifier.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Verify
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-verify-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-webhooks-api
  name: sendly-now Webhooks API
  description: User-managed outbound webhooks for email and contact events.
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-webhooks-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
- aid: sendly-now:sendly-now-workflows-api
  name: sendly-now Workflows API
  description: Event-triggered automations and the contact runs through them. Served by the `/api/v1` surface (bare payloads,
    RFC 9457 errors).
  humanURL: https://docs.sendly.now/api-reference/overview
  baseURL: https://api.sendly.now
  tags:
  - Workflows
  properties:
  - type: OpenAPI
    url: openapi/sendly-now-workflows-api-openapi.yml
  - type: JSONSchema
    url: json-schema/sendly-now-compose-mailbox-message-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-mailbox-conversation-reply-body-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-logo-readiness-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-send-email-v1-schema.json
  - type: JSONSchema
    url: json-schema/sendly-now-domain-schema.json
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-31'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://sendly.now/openapi.json
    status: null
  - url: https://docs.sendly.now/openapi.json
    status: null
  - url: https://api.sendly.now/api/mcp
    status: 401
  - url: https://app.sendly.now/api/mcp
    status: 401
  - url: https://sendly.now/
    status: 200
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 43
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

sendly-now API — frequently asked questions

Does sendly-now have an API?

Yes. APIs.io lists 27 APIs from sendly-now, including sendly-now Account API, sendly-now Analytics API and sendly-now API Keys API, and 24 more.

Is there an OpenAPI specification for the sendly-now API?

Yes. APIs.io indexes 27 OpenAPI specifications for sendly-now, each linked for download from this page.

How do I authenticate with the sendly-now API?

sendly-now documents its authentication (1 scheme). The details are profiled on APIs.io as Sendly Now Authentication.

How much does the sendly-now API cost?

APIs.io lists 2 pricing plans for sendly-now, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the sendly-now API ready for AI agents?

sendly-now has a Kin Score of 67.6 out of 100 (exemplar) and an Agent Readiness score of 61.7 (agent-native), scored by API Evangelist on 2026-10-31.

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