Postmarkr is listed as active in the registry but did not answer our last check.
Prepare physical letters and check their status. Review and pay on Postmarkr before mailing.
Postmarkr does not always answer
Over the last week it answered 17.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.
claude mcp add letters --transport http https://postmarkr.com/api/mcphttps://postmarkr.com/api/mcp[mcp_servers.letters]
url = "https://postmarkr.com/api/mcp"{
"mcpServers": {
"letters": {
"url": "https://postmarkr.com/api/mcp"
}
}
}{
"servers": {
"letters": {
"type": "http",
"url": "https://postmarkr.com/api/mcp"
}
}
}Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://postmarkr.com/api/mcp | streamable-http | answering | 101 ms | 9 min ago |
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Postmarkr — questions
Answers built from our own checks of this server.