flomailr

Flomailr provides AI‑powered email design, allowing users to chat with Claude or other AI models to generate on‑brand email content. The service offers a preview chat interface, server‑side guardrails, and free usage for up to 500 contacts. It aims to simplify email creation by turning plain‑language requests into professional messages, integrating AI assistance directly into the email workflow.

flomailr is listed with 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Email, Design, and Chatbots.

The flomailr catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

flomailr’s developer surface includes authentication, engineering blog, getting-started guide, API reference, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.3/100 thin Agent 33/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 API

Company Artificial Intelligence Email Design Chatbots Marketing

Kin Score

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

Composite quality — 26.3/100 · thin

Contract Quality 5.2 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 4.7 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 4.6 / 9

Regulatory Posture 2.6 / 15

Agent readiness — 33/100 · 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 0 / 7

Typed Event Surface 0 / 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 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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 →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 24.7 — up to +18.8 composite points Ask about this →
Access Clarity scores 27.7 — up to +14.5 composite points Ask about this →
Developer Ergonomics scores 33.3 — up to +13.3 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/flomailr-com/apis.yml: open an issue on github.com/api-evangelist/flomailr-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 1

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

flomailr API

flomailr API as documented publicly: 31 operations. Contract generated from the documentation by API Evangelist (2026-11-08); not the provider's own document.

Semantic Vocabularies 1

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

Flomailr Com Context

29 classes · 37 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.

flomailr API Rules

43 rules · 41 error-severity 1 warn-severity 1 info-severity

SPECTRAL

JSON Schema 6

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

GetApiV1EventsResponse

8 properties

JSON SCHEMA

GetApiV1KeysIdResponse

6 properties

JSON SCHEMA

GetApiV1KeysResponse

6 properties

JSON SCHEMA

GetApiV1ListsIdResponse

5 properties

JSON SCHEMA

PatchApiV1FormsIdRequest

5 properties

JSON SCHEMA

PostApiV1EventsRequest

8 properties

JSON SCHEMA

Security Posture 2

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

flomailr Authentication

1 scheme

SECURITY

flomailr Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

Conformance

Scroll for all 7

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

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: flomailr-com
name: flomailr
description: Flomailr provides AI‑powered email design, allowing users to chat with Claude or other AI models to generate
  on‑brand email content. The service offers a preview chat interface, server‑side guardrails, and free usage for up to 500
  contacts. It aims to simplify email creation by turning plain‑language requests into professional messages, integrating
  AI assistance directly into the email workflow.
url: https://artifacts.apis.io/flomailr-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-08 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-08'
modified: '2026-11-08'
tags:
- Company
- Artificial Intelligence
- Email
- Design
- Chatbots
- Marketing
tags_raw:
- Company
- AI
- Email
- Design
- Chatbot
- Marketing
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/flomailr-com-rules.yml
- type: JSONLD
  url: json-ld/flomailr-com-context.jsonld
- type: Vocabulary
  url: vocabulary/flomailr-com-vocabulary.yml
- type: DataModel
  url: data-model/flomailr-com-data-model.yml
- type: Idempotency
  url: conventions/flomailr-com-conventions.yml
- type: Conventions
  url: conventions/flomailr-com-conventions.yml
- type: Authentication
  url: authentication/flomailr-com-authentication.yml
- type: Conformance
  url: conformance/flomailr-com-conformance.yml
- type: LLMsTxt
  url: llms/flomailr-com-llms.txt
- type: WellKnown
  url: well-known/flomailr-com-well-known.yml
- type: Hosts
  url: hosts/flomailr-com-hosts.yml
- type: Vendors
  url: vendors/flomailr-com-vendors.yml
- type: TermsOfService
  url: https://flomailr.com/terms
- type: PrivacyPolicy
  url: https://flomailr.com/privacy
- type: Login
  url: https://flomailr.com/sign-in
- type: Blog
  url: https://flomailr.com/blog
- type: GettingStarted
  url: https://flomailr.com/docs/quick-start
- type: APIReference
  url: https://flomailr.com/llms.txt
- type: DomainSecurity
  url: security/flomailr-com-domain-security.yml
- type: Website
  url: https://flomailr.com/
apis:
- aid: flomailr-com:flomailr-com-api
  name: flomailr API
  description: 'flomailr API as documented publicly: 31 operations. Contract generated from the documentation by API Evangelist
    (2026-11-08); not the provider''s own document.'
  humanURL: https://flomailr.com/docs/api/send
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/flomailr-com-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/flomailr-com-post-api-v1-events-request-schema.json
  - type: JSONSchema
    url: json-schema/flomailr-com-get-api-v1-events-response-schema.json
  - type: JSONSchema
    url: json-schema/flomailr-com-get-api-v1-keys-id-response-schema.json
  - type: JSONSchema
    url: json-schema/flomailr-com-get-api-v1-keys-response-schema.json
  - type: JSONSchema
    url: json-schema/flomailr-com-patch-api-v1-forms-id-request-schema.json
  - type: JSONSchema
    url: json-schema/flomailr-com-get-api-v1-lists-id-response-schema.json
x-enrichment:
  date: '2026-11-08'
  status: enriched
  artifacts_added: 28
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

flomailr API — frequently asked questions

Does flomailr have an API?

Yes. APIs.io lists 1 API from flomailr, including flomailr API.

Is there an OpenAPI specification for the flomailr API?

Yes. APIs.io indexes 1 OpenAPI specification for flomailr, each linked for download from this page.

How do I authenticate with the flomailr API?

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

Is the flomailr API ready for AI agents?

flomailr has a Kin Score of 26.3 out of 100 (thin) and an Agent Readiness score of 33.4 (agent-ready), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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