Proofpoint

Proofpoint Secure Email Relay (SER) Email Submission API

Secure Email Relay lets applications send authenticated transactional mail through Proofpoint rather than through an unmanaged relay, which is what makes a strict DMARC policy achievable. The Email Submission API accepts a message at mail.ser.proofpoint.com after an OAuth client-credential exchange; Proofpoint ships first-party client libraries for Python, Java and .NET against it.

GitHub

Documentation

📖
APIReference
https://api-docs.ser.proofpoint.com/docs/email-submission

Other Resources

🔗
SDKs
https://raw.githubusercontent.com/api-evangelist/proofpoint/refs/heads/main/packages/proofpoint-packages.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/proofpoint-secure-email-relay"
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.

API entry from apis.yml

apis.yml Raw ↑ 
aid: proofpoint-secure-email-relay
name: Proofpoint Secure Email Relay (SER) Email Submission API
image: https://kinlane-productions2.s3.amazonaws.com/api-evangelist-site/company-logos/proofpoint.png
description: Secure Email Relay lets applications send authenticated transactional mail through Proofpoint
  rather than through an unmanaged relay, which is what makes a strict DMARC policy achievable. The Email
  Submission API accepts a message at mail.ser.proofpoint.com after an OAuth client-credential exchange;
  Proofpoint ships first-party client libraries for Python, Java and .NET against it.
humanURL: https://api-docs.ser.proofpoint.com/docs/email-submission
baseURL: https://mail.ser.proofpoint.com
tags:
- Email
- DMARC
- Transactional Email
properties:
- type: APIReference
  url: https://api-docs.ser.proofpoint.com/docs/email-submission
- type: SDKs
  url: packages/proofpoint-packages.yml