letterport is answering right now. Last checked 10 min ago.
Real email inboxes for AI agents: create addresses, read mail as JSON, reply in threads.
Nothing serious here today
Today is the operative word: we check letterport every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.
claude mcp add letterport --transport http https://api.letterport.dev/mcphttps://api.letterport.dev/mcp[mcp_servers.letterport]
url = "https://api.letterport.dev/mcp"{
"mcpServers": {
"letterport": {
"url": "https://api.letterport.dev/mcp"
}
}
}{
"servers": {
"letterport": {
"type": "http",
"url": "https://api.letterport.dev/mcp"
}
}
}This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://api.letterport.dev/mcp | streamable-http | sign-in | 365 ms | 10 min ago |
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letterport — questions
Answers built from our own checks of this server.