0n3
MCP servers · email

Mailgun MCP server

Email API — send, receive, validate, track deliverability. Hosted by 0n3: 8 endpoints your AI can call with your own Mailgun account, from Claude, ChatGPT, Cursor, Claude Code, Codex or Gemini CLI. One sign-in, one key per AI, a receipt for every call.

Connect MailgunInstall into your AIWatch it work

8 endpoints4 categoriesauth: api_keyhosted

What your AI can do with Mailgun

Domains · Manage sending domains7
Send a messagePOST /{domain}/messages
List domainsGET /domains
Get a domainGET /domains/{domain}
List eventsGET /{domain}/events
Get statsGET /{domain}/stats/total
List bouncesGET /{domain}/bounces
List unsubscribesGET /{domain}/unsubscribes
Validate email · Validate email addresses1
Validate emailGET /address/validate
Send email · Send emails0
Send emails
Track events · Track email events0
Track email events

Install in three steps

  1. Create a free account at 0n3.app and connect Mailgun: paste a key or sign in through a door. It lands in your vault, encrypted.
  2. Open 0n3.app/install, pick your AI. A key is made for that AI alone; copy the line it gives you.
  3. Ask your AI: whoami. It answers with your connected services. Then ask it to send a message in Mailgun.
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"

Connect Mailgun to

Claude Code + MailgunMCP server + skillClaude (desktop & claude.ai) + MailgunconnectorChatGPT + Mailgunconnector · GPT actionCodex CLI + MailgunMCP serverGemini CLI + MailgunMCP serverCursor + MailgunMCP serverVS Code (Copilot) + MailgunMCP serverWindsurf + MailgunMCP server

More email MCP servers

Resend67 endpointsGmail13 endpointsPostmark9 endpointsSendGrid5 endpoints

Questions

What can an AI do with the Mailgun MCP server?

8 things: domains, validate email, send email, track events. Every call runs with your own Mailgun connection and lands on a receipt.

Do I need to run anything on my computer?

No. 0n3 is hosted. Connect Mailgun once, install 0n3 into your AI with one line, done.

Where does my Mailgun key go?

Into your 0n3 vault, encrypted, one record per connection. The AI never sees it.