Faivelo

Faivelo offers flat‑rate business email hosting with unlimited mailboxes, domain registration, and built‑in IMAP/SMTP, webmail, and two‑factor sign‑in. It provides a transactional and marketing email API, AI‑powered mail agents, and tools such as calendars, contacts, and meetings for teams, founders, sales groups, and small businesses. All plans include spam filtering, DKIM/SPF/DMARC setup, and migration from existing providers.

Faivelo is listed with 3 APIs on the APIs.io network: core API, transactional API, and v1 API. Tagged areas include Business Email, Transactional Email, Marketing Email, Email API, and AI Agents.

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

Faivelo’s developer surface includes authentication, support, pricing, engineering blog, getting-started guide, documentation, API reference, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.0/100 developing Agent 39/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

3 APIs

Business EmailTransactional Email Marketing Email Email API AI Agents

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 46.0/100 · developing

Contract Quality 6.9 / 21

Developer Ergonomics 8.1 / 17

Access Clarity 11.6 / 17

Operational Transparency 3.9 / 11

Contract Governance 2.2 / 10

Discoverability 5.3 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 39/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 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 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too Ask about this →

6 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 32.4 — up to +16.9 composite points Ask about this →
Developer Ergonomics scores 47.6 — up to +10.5 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/faivelo-com/apis.yml: open an issue on github.com/api-evangelist/faivelo-com 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 →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 3

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

Faivelo core API

Faivelo core API as documented publicly: 16 operations. Contract generated from the documentation by API Evangelist (2026-11-07); not the provider's own document.

Faivelo transactional API

Faivelo transactional API as documented publicly: 4 operations. Contract generated from the documentation by API Evangelist (2026-11-07); not the provider's own document.

Faivelo v1 API

Faivelo v1 API as documented publicly: 12 operations. Contract generated from the documentation by API Evangelist (2026-11-07); not the provider's own document.

Faivelo API pricing

Prices published by Faivelo, read 2026-11-07 from faivelo.com/docs/billing/plans/. A free plan or tier is listed.

Plan	Price
Starter	$6/month
Growth	$12/month
Pro	$24/month
Business	$49/month
Free	Free

Plan details, limits and sources →

Rate limits

Requests per key: 120 per minute
Mailbox creations per key: 10 per rolling 24 hours
Sending rate (recipients/min) Pro: 120 per minute

All 7 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Faivelo Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Faivelo Rate Limits

7 limits

RATE LIMITS

Event Specifications 1

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

Faivelo Com Webhooks

ASYNCAPI

Semantic Vocabularies 1

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

Faivelo Com Context

33 classes · 30 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Faivelo API Rules

42 rules · 38 error-severity 3 warn-severity 1 info-severity

SPECTRAL

5 properties

JSON SCHEMA

Scroll for all 18

Security Posture 2

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

Faivelo Authentication

1 scheme

SECURITY

Faivelo Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Idempotency

Conventions

Conformance

Scroll for all 8

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: faivelo-com
name: Faivelo
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: high
  probe_state: gated
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
image: https://faivelo.com/og-image.png?v=2
description: Faivelo offers flat‑rate business email hosting with unlimited mailboxes, domain registration, and built‑in IMAP/SMTP,
  webmail, and two‑factor sign‑in. It provides a transactional and marketing email API, AI‑powered mail agents, and tools
  such as calendars, contacts, and meetings for teams, founders, sales groups, and small businesses. All plans include spam
  filtering, DKIM/SPF/DMARC setup, and migration from existing providers.
url: https://artifacts.apis.io/faivelo-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Business Email
- Transactional Email
- Marketing Email
- Email API
- AI Agents
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/faivelo-com-rate-limits.yml
- type: Plans
  url: plans/faivelo-com-plans-pricing.yml
- type: Spectral
  url: rules/faivelo-com-rules.yml
- type: JSONLD
  url: json-ld/faivelo-com-context.jsonld
- type: Vocabulary
  url: vocabulary/faivelo-com-vocabulary.yml
- type: Webhooks
  url: asyncapi/faivelo-com-webhooks.yml
- type: DataModel
  url: data-model/faivelo-com-data-model.yml
- type: Idempotency
  url: conventions/faivelo-com-conventions.yml
- type: Conventions
  url: conventions/faivelo-com-conventions.yml
- type: Authentication
  url: authentication/faivelo-com-authentication.yml
- type: Conformance
  url: conformance/faivelo-com-conformance.yml
- type: LLMsTxt
  url: llms/faivelo-com-llms.txt
- type: WellKnown
  url: well-known/faivelo-com-well-known.yml
- type: Hosts
  url: hosts/faivelo-com-hosts.yml
- type: Vendors
  url: vendors/faivelo-com-vendors.yml
- type: TrustCenter
  url: https://faivelo.com/trust
- type: TermsOfService
  url: https://faivelo.com/terms
- type: Support
  url: https://faivelo.com/support
- type: PrivacyPolicy
  url: https://faivelo.com/privacy
- type: Pricing
  url: https://faivelo.com/docs/billing/plans/
- type: Login
  url: https://faivelo.com/login
- type: Blog
  url: https://faivelo.com/blog
- type: GettingStarted
  url: https://faivelo.com/guides/cloudflare-email-setup
- type: Documentation
  url: https://apidocs.faivelo.com/
- type: APIReference
  url: https://faivelo.com/docs/api
- type: DomainSecurity
  url: security/faivelo-com-domain-security.yml
- type: Website
  url: https://faivelo.com/
apis:
- aid: faivelo-com:core-api
  name: Faivelo core API
  description: 'Faivelo core API as documented publicly: 16 operations. Contract generated from the documentation by API Evangelist
    (2026-11-07); not the provider''s own document.'
  humanURL: https://faivelo.com/docs/api
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/faivelo-com-core-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-partner-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-v1-mailboxes-my-agent-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-customers-id-api-keys-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-customers-id-domains-domain-plan-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-user-api-keys-response-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-customers-id-plan-request-schema.json
- aid: faivelo-com:transactional-api
  name: Faivelo transactional API
  description: 'Faivelo transactional API as documented publicly: 4 operations. Contract generated from the documentation
    by API Evangelist (2026-11-07); not the provider''s own document.'
  humanURL: https://faivelo.com/docs/transactional
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/faivelo-com-transactional-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-v1-mailboxes-address-send-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-v1-mailboxes-address-attachments-response-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-v1-mailboxes-address-attachments-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-get-api-v1-emails-id-response-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-v1-emails-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-api-v1-mailboxes-address-send-response-schema.json
- aid: faivelo-com:v1-api
  name: Faivelo v1 API
  description: 'Faivelo v1 API as documented publicly: 12 operations. Contract generated from the documentation by API Evangelist
    (2026-11-07); not the provider''s own document.'
  humanURL: https://faivelo.com/api/v1
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/faivelo-com-v1-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/faivelo-com-post-mailboxes-address-send-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-mailboxes-address-attachments-request-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-post-mailboxes-address-attachments-response-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-get-emails-id-response-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-get-services-response-schema.json
  - type: JSONSchema
    url: json-schema/faivelo-com-get-mail-host-response-schema.json
x-coverage:
  state: gated
  reason: auth-required
  detail: GraphQL endpoint https://faivelo.com/api/graphql returns 401 Unauthorized, indicating API is auth‑required.
  evidence:
  - url: https://faivelo.com/api/graphql
    status: 401
  checked: '2026-11-07'
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 57
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Faivelo API — frequently asked questions

Does Faivelo have an API?

Yes. APIs.io lists 3 APIs from Faivelo, including Faivelo core API, Faivelo transactional API and Faivelo v1 API.

Is there an OpenAPI specification for the Faivelo API?

Yes. APIs.io indexes 3 OpenAPI specifications for Faivelo, each linked for download from this page.

How do I authenticate with the Faivelo API?

Faivelo documents its authentication (1 scheme). The details are profiled on APIs.io as Faivelo Authentication.

How much does the Faivelo API cost?

Faivelo publishes its prices; its Starter plan is $6/month as of 2026-11-07. APIs.io lists 5 pricing plans for Faivelo, with each plan's price, limits and inclusions under Pricing on this page.

Is the Faivelo API ready for AI agents?

Faivelo has a Kin Score of 46.0 out of 100 (developing) and an Agent Readiness score of 39.2 (agent-ready), scored by API Evangelist on 2026-11-13.

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