com.mailvakt/mailvakt
MailVakt
Use when email lands in spam: audits SPF, DKIM, DMARC, MX and returns the DNS records to fix it.
alive probed 2026-10-08 · HTTP 200
8tools
2.5ktokens in Claude Opus 5.5
2.6ktokens in Claude Code
1.3 %of a 200k context window
1.5ko200k_base estimate
882 msto initialize
386 msto list tools
- Endpoint
- https://mcp.mailvakt.com/mcp (streamable-http)
- Host
- mcp.mailvakt.com
- Protocol
- 2025-11-25
- Reports itself as
- mailvakt 0.1.0
- Capabilities
- resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Website
- https://www.mailvakt.com
- Registry
- active, updated 2026-10-07 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| diagnose_domain | 291 | 20 % |
| generate_dns_records | 247 | 17 % |
| get_dmarc_summary | 206 | 14 % |
| analyze_email_headers | 159 | 11 % |
| start_inbox_test | 157 | 11 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-08 11:04 | alive | 1.3 s | 8 | 2.5k | 1.5k |
| 2026-10-05 13:24 | alive | 882 ms | 8 | 2.5k | 1.5k |
| 2026-10-05 00:17 | alive | 565 ms | 8 | 1.5k | |
| 2026-10-04 09:56 | alive | 2.1 s | 8 | 1.4k | |
| 2026-10-04 07:50 | alive | 1.9 s | 8 | 1.4k | |
| 2026-10-03 20:30 | alive | 1.4 s | 8 | 1.4k | |
| 2026-10-03 17:48 | alive | 802 ms | 8 | 1.4k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.mailvakt/mailvakt)
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.