SendGrid

SendGrid Mail Send API

Twilio Mail Send API.

Documentation GitHub OpenAPI

Operations 1

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

POST /v3/mail/send Send an email · Send Email with Twilio SendGrid #

Ask an LLM

“How do I send a transactional email through the v3 Web API?”

“Can I send with a dynamic template and per-recipient personalizations?”

Tell an agent

Send an email from {from} with subject {subject} to {personalizations}.

Send template {template_id} from {from} to {personalizations}.

Documentation

https://www.twilio.com/docs/sendgrid/api-reference/account-provisioning

https://www.twilio.com/docs/sendgrid/api-reference/alerts

https://www.twilio.com/docs/sendgrid/api-reference/api-keys

https://www.twilio.com/docs/sendgrid/api-reference/domain-authentication

https://www.twilio.com/docs/sendgrid/api-reference/email-activity

https://www.twilio.com/docs/sendgrid/api-reference/email-address-validation

https://www.twilio.com/docs/sendgrid/api-reference/enforced-tls

https://www.twilio.com/docs/sendgrid/api-reference/sendgrid-integrations

https://www.twilio.com/docs/sendgrid/api-reference/ip-access-management

https://www.twilio.com/docs/sendgrid/api-reference/ip-address-management-api

https://www.twilio.com/docs/sendgrid/api-reference/ip-warmup

https://www.twilio.com/docs/sendgrid/api-reference/ip-address

https://www.twilio.com/docs/sendgrid/api-reference/link-branding

https://www.twilio.com/docs/sendgrid/api-reference/campaigns-api

https://www.twilio.com/docs/sendgrid/api-reference/contacts-api-custom-fields

https://www.twilio.com/docs/sendgrid/api-reference/sender-identities-api

https://www.twilio.com/docs/sendgrid/api-reference/mail-settings

https://www.twilio.com/docs/sendgrid/api-reference/mail-send

https://www.twilio.com/docs/sendgrid/api-reference/contacts

https://www.twilio.com/docs/sendgrid/api-reference/custom-fields

https://www.twilio.com/docs/sendgrid/api-reference/designs-api

https://www.twilio.com/docs/sendgrid/api-reference/lists

https://www.twilio.com/docs/sendgrid/api-reference/segmenting-contacts-v2

https://www.twilio.com/docs/sendgrid/api-reference/segmenting-contacts

https://www.twilio.com/docs/sendgrid/api-reference/senders

https://www.twilio.com/docs/sendgrid/api-reference/single-sends

https://www.twilio.com/docs/sendgrid/api-reference/marketing-campaign-stats

https://www.twilio.com/docs/sendgrid/api-reference/send-test-email

https://www.twilio.com/docs/sendgrid/api-reference/partner-settings

https://www.twilio.com/docs/sendgrid/api-reference/recipients-data-erasure

https://www.twilio.com/docs/sendgrid/api-reference/reverse-dns

https://www.twilio.com/docs/sendgrid/api-reference/cancel-scheduled-sends

https://www.twilio.com/docs/sendgrid/api-reference/api-key-permissions

https://www.twilio.com/docs/sendgrid/api-reference/sendgrid-engagement-quality-api

https://www.twilio.com/docs/sendgrid/api-reference/single-sign-on-settings

https://www.twilio.com/docs/sendgrid/api-reference/stats

https://www.twilio.com/docs/sendgrid/api-reference/subusers-api

https://www.twilio.com/docs/sendgrid/api-reference/suppressions-unsubscribe-groups

https://www.twilio.com/docs/sendgrid/api-reference/teammates

https://www.twilio.com/docs/sendgrid/api-reference/transactional-templates

https://www.twilio.com/docs/sendgrid/api-reference/settings-tracking

https://www.twilio.com/docs/sendgrid/api-reference/users-api

https://www.twilio.com/docs/sendgrid/api-reference/sender-verification

https://www.twilio.com/docs/sendgrid/api-reference/webhooks

Specifications

https://raw.githubusercontent.com/api-evangelist/sendgrid/refs/heads/main/openapi/sendgrid-mail-send-api-openapi.yml

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/sendgrid-mail-send-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: Twilio SendGrid Mail Mail Send API
  summary: The Twilio SendGrid v3 Mail API allows you to send email at scale over HTTP. You can also group mail sends into batches.
  description: The Twilio SendGrid v3 Mail API allows you to send email at scale over HTTP. The Mail Send endpoint supports many levels of functionality, allowing you to send templates, set categories and custom arguments that can be used to analyze your send, and configure which tracking settings to include such as opens and clicks. You can also group mail sends into batches, allowing you to schedule and cancel sends by their batch IDs.
  termsOfService: https://www.twilio.com/legal/tos
  contact:
    name: Twilio SendGrid Support
    url: https://support.sendgrid.com/hc/en-us
  license:
    name: MIT
    url: https://code.hq.twilio.com/twilio/sendgrid-oas/blob/main/LICENSE
  version: 1.0.0
  x-sendgrid:
    libraryPackage: mail
servers:
- url: https://api.sendgrid.com
  description: for global users and subusers
- url: https://api.eu.sendgrid.com
  description: for EU regional subusers
security:
- BearerAuth: []
tags:


# --- truncated at 32 KB (35 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/sendgrid/refs/heads/main/openapi/sendgrid-mail-send-api-openapi.yml