Send USPS letters & certified mail from any agent. Hosted: sign in, no install.
Connect Remote server
claude mcp add --transport http mailsnail https://api.mailsnail.dev/mcp
{
"mcpServers": {
"mailsnail": {
"url": "https://api.mailsnail.dev/mcp"
}
}
}
{
"servers": {
"mailsnail": {
"type": "http",
"url": "https://api.mailsnail.dev/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://api.mailsnail.dev/mcp
Tools
This server asks for a key before it lists its tools. Connect it with your own key to see them.
Details
| Endpoint | https://api.mailsnail.dev/mcp (Streamable HTTP) |
| Package | [email protected] (NPM, stdio) |
| First published | 7 Nov 2026 |
| Last updated | 7 Nov 2026 |
| Registry name | io.github.iancollins27/mailsnail |
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