Plainmail for Claude Code

dev.plainmail/mail

Email on your own domains: add a domain, write its DNS, create mailboxes, read and send mail.

client:Claude Code transport:streamable-http

Install Plainmail in Claude Code

run in your project directory

claude mcp add --transport http mail https://app.plainmail.dev/api/mcp/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs