0n3
MCP servers · Mailgun · MCP server + skill

Connect Claude Code to Mailgun

One line gives Claude Code your Mailgun account as tools: 8 endpoints, domains, validate email, send email, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude Code's access alone any time.

Get the line for Claude CodeConnect Mailgun first

Three steps

  1. Create a free 0n3 account and connect Mailgun. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Claude Code. The terminal agent. One command, then every connection you hold is a tool in your shell. The skill file teaches it how 0n3 works.
  3. Ask Claude Code: whoami. Then: "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>"

The line above carries a placeholder; 0n3.app/install mints a real key named for Claude Code and fills it in.

What Claude Code can then do in 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

Mailgun in other AI clients

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

Claude Code with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints