com.warminboxes/deliverability-tools
WarmInboxes Free MCP
Is the WarmInboxes Free MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-11.
Read-only deliverability + strategy: free cold email checks, list tools, inbox planning, research.
alive probed 2026-11-14 · unchanged since 2026-11-11 · HTTP 200
- Endpoint
- https://warminboxes.com/mcp (streamable-http)
- Host
- warminboxes.com
- Protocol
- 2025-06-18
- Reports itself as
- warminboxes-deliverability-tools 1.2.0
- Capabilities
- tools
- Instructions
- 6 126 characters
- Of a 1M window
- 1.6 % of a 1M context window
- Count
- 16k tokens in Claude, exact, measured 2026-11-11. With the Claude Code prefix mcp__…__ on each tool name: 17k. The o200k_base estimate is 9.3k. Counted again when the tool definitions change. Method.
- Website
- https://warminboxes.com/for-ai
- Registry
- active, updated 2026-11-10 · registry entry
- Changes
- 9 recorded, reachable in 9 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.72×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| plan_infrastructure | 1 157 | 672 | 7 % |
| plan_from_list | 771 | 448 | 5 % |
| generate_dns_records | 671 | 390 | 4 % |
| plan_rotation | 584 | 339 | 4 % |
| find_resources | 532 | 309 | 3 % |
Compare this server with others.
More servers
Other registry entries on warminboxes.com.
- WarmInboxes Free MCP: Fleet Planner com.warminboxes/fleet-planner · alive
Servers that mention deliverability.
- Powerline Email Tools ai.powerline/email-tools · alive
- ai.verifox/email-verifier · alive
- Auth Posture — Email Deliverability & Spoofability Audit app.rowb.auth-posture/audit · alive
- SendHQ cc.sendhq/sendhq · needs auth
- adbtd com.adbtd/mcp · needs auth
- Domain & Company Intel MCP com.datakoot/domain-dns-whois · alive
- ParseBounce com.parsebounce/parsebounce · needs auth
- Qualisend Email Verification com.qualisend/email-verification · alive
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-11-11 11:18 | alive | 338 ms | 52 | 16k | 9.3k |
| 2026-11-10 11:33 | alive | 627 ms | 52 | 16k | 9.1k |
| 2026-11-06 11:14 | alive | 1.5 s | 52 | 16k | 9.1k |
| 2026-11-05 11:15 | alive | 1.7 s | 52 | 16k | 9.1k |
| 2026-11-02 11:30 | alive | 1.5 s | 52 | 16k | 9.0k |
| 2026-10-31 09:56 | alive | 2.5 s | 52 | 15k | 8.9k |
| 2026-10-27 09:13 | alive | 462 ms | 52 | 15k | 8.8k |
| 2026-10-25 20:45 | alive | 538 ms | 51 | 15k | 8.5k |
| 2026-10-23 09:45 | alive | 1.5 s | 51 | 8.5k |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.
Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.