MailerSend · OpenAPI Overlay 1.0.0

API Evangelist enhancements for MailerSend Bulk Email Templates API

2 actions 2 updates update extends openapi/mailersend-templates-api-openapi.yml

Derived by API Evangelist Built from the contracts MailerSend publishes. MailerSend did not publish this file.

View Overlay File View on GitHub Overlay Specification

What the actions change

x-apievangelist-providerx-apievangelist-enrichedx-apievangelist-conventionsx-apievangelist-errorsx-apievangelist-error-codesx-apievangelist-rate-limitsx-apievangelist-authenticationx-apievangelist-scopes

Targets 2

$.info

OpenAPI Overlay

overlay: 1.0.0
info:
  title: API Evangelist enhancements for MailerSend Bulk Email Templates API
  version: 1.0.0
extends: openapi/mailersend-templates-api-openapi.yml
actions:
- target: $.info
  update:
    x-apievangelist-provider: mailersend
    x-apievangelist-enriched: '2026-08-13'
    x-apievangelist-conventions: conventions/mailersend-conventions.yml
    x-apievangelist-errors: errors/mailersend-problem-types.yml
    x-apievangelist-error-codes: errors/mailersend-error-codes.yml
    x-apievangelist-rate-limits: rate-limits/mailersend-rate-limits.yml
    x-apievangelist-authentication: authentication/mailersend-authentication.yml
    x-apievangelist-scopes: scopes/mailersend-scopes.yml
    x-apievangelist-mcp: mcp/mailersend-mcp.yml
    x-apievangelist-webhooks: asyncapi/mailersend-webhooks.yml
    x-apievangelist-note: MailerSend publishes no machine-readable API contract; the extended document is an API
      Evangelist best-effort spec built from developers.mailersend.com.
- target: $
  update:
    x-rate-limit-headers:
    - x-ratelimit-limit
    - x-ratelimit-remaining
    - x-ratelimit-reset
    - retry-after
    - x-apiquota-remaining
    - x-apiquota-reset
    x-idempotency:
      supported: false
      note: MailerSend documents no idempotency key.
    x-pagination:
      style: page-number
      params:
      - page
      - limit
      envelope: data

Work with this as data

Every overlay 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

Tools for openapi overlays

4 MCP tools reach this

find_overlaysBrowse and filter every overlay in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This overlay

curl "https://apis.io/api/v1/overlays/mailersend-templates-api-overlay"

All openapi overlays

curl "https://apis.io/api/v1/overlays?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.