Card Mailer for Claude.ai
me.onmax/card-mailer
Print and mail 5x7 holiday and thank-you photo cards to a US address list. $2.49/card incl. postage.
client:Claude.ai
transport:streamable-http
tools:6
Install Card Mailer in Claude.ai
Settings → Connectors → Add custom connector
https://cards.onmax.me/mcp
Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs