com.mailcheer/mailcheer
Mailcheer
Email API + newsletters. 17 MCP tools. OAuth 2.1 PKCE or API key. EU-hosted (Hetzner + SES).
alive probed 2026-10-11 · HTTP 200
19tools
4.9ktokens in Claude Opus 5.5
5.0ktokens in Claude Code
2.4 %of a 200k context window
2.8ko200k_base estimate
1.3 sto initialize
555 msto list tools
- Endpoint
- https://mailcheer.com/api/mcp (streamable-http)
- Host
- mailcheer.com
- Protocol
- 2025-06-18
- Reports itself as
- mailcheer 1.0.0
- Capabilities
- resources, tools
- Instructions
- 911 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-11. Counted again when the tool definitions change. Method.
- Website
- https://mailcheer.com/docs/api
- Registry
- active, updated 2026-10-05 · registry entry
- Reachable
- 8 of the last 8 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| send_email | 409 | 15 % |
| add_subscriber | 203 | 7 % |
| preview_campaign_send | 198 | 7 % |
| create_campaign | 196 | 7 % |
| verify_email | 178 | 6 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-11 10:15 | alive | 1.4 s | 19 | 4.9k | 2.8k |
| 2026-10-09 11:09 | alive | 1.6 s | 18 | 4.5k | 2.6k |
| 2026-10-05 13:24 | alive | 1.3 s | 17 | 4.2k | 2.4k |
| 2026-10-05 00:17 | alive | 698 ms | 17 | 2.4k | |
| 2026-10-04 09:56 | alive | 1.3 s | 17 | 2.4k | |
| 2026-10-04 07:50 | alive | 1.6 s | 17 | 2.4k | |
| 2026-10-03 20:30 | alive | 1.4 s | 17 | 2.4k | |
| 2026-10-03 17:48 | alive | 382 ms | 17 | 2.4k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.mailcheer/mailcheer)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.