sendly-now

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 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.

Documentation GitHub OpenAPI

Operations 8

POST /api/compat/mailgun/v3/{domain}/messages Send a message (Mailgun dialect) #

POST /api/compat/plunk/v1/send Send an email (Plunk dialect) #

POST /api/compat/postmark/email Send an email (Postmark dialect) #

POST /api/compat/postmark/email/batch Send a batch of emails (Postmark dialect) #

POST /api/compat/resend/emails Send an email (Resend dialect) #

POST /api/compat/resend/emails/batch Send a batch of emails (Resend dialect) #

GET /api/compat/resend/emails/{id} Retrieve an email (Resend dialect) #

POST /api/compat/sendgrid/v3/mail/send Send mail (SendGrid v3 dialect) #

Specifications

⚙

OpenAPI

https://artifacts.apis.io/sendly-now/openapi/sendly-now-compatibility-api-openapi.yml

Schemas & Data

📊

JSONSchema

https://artifacts.apis.io/sendly-now/json-schema/sendly-now-compose-mailbox-message-schema.json

📊

JSONSchema

https://artifacts.apis.io/sendly-now/json-schema/sendly-now-mailbox-conversation-reply-body-schema.json

📊

JSONSchema

https://artifacts.apis.io/sendly-now/json-schema/sendly-now-domain-logo-readiness-v1-schema.json

📊

JSONSchema

https://artifacts.apis.io/sendly-now/json-schema/sendly-now-send-email-schema.json

📊

JSONSchema

https://artifacts.apis.io/sendly-now/json-schema/sendly-now-send-email-v1-schema.json

📊

JSONSchema

https://artifacts.apis.io/sendly-now/json-schema/sendly-now-domain-schema.json

Work with this as data

Every API 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 apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
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 API

curl "https://apis.io/api/v1/apis/sendly-now:sendly-now-compatibility-api"

All apis

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

Discovery needs no key. Ratings and market analysis are Pro.

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.

OpenAPI Specification

openapi: 3.2.0
info:
  title: Sendly Now Compatibility API
  version: 1.0.0
  contact:
    name: Sendly Support
    url: https://sendly.now
  license:
    name: AGPL-3.0
    url: https://www.gnu.org/licenses/agpl-3.0.txt
  description: 'Operations tagged Compatibility across 2 of this provider''s published API definitions: openapi.json, sendly-now-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://api.sendly.now
tags:


# --- truncated at 32 KB (63 KB total) ---
# Full source: https://artifacts.apis.io/sendly-now/openapi/sendly-now-compatibility-api-openapi.yml