mcpcost

io.github.yybd/multi-mail-mcp

multi-mail

Is the multi-mail MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-08.

Several Gmail accounts: search, read, draft, send, labels and Google Calendar. Own OAuth client.

alive probed 2026-11-14 · unchanged since 2026-11-08

14tools
4.6ktokens in Claude Opus 5.5
2.3 %of Claude's 200k window
1.8×the median server
348 msto initialize
11 msto list tools
Run it
npx -y @yybd/multi-mail-mcp@0.2.1 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
multi-mail 0.2.1
Capabilities
tools
Instructions
1 391 characters
Of a 1M window
0.5 % of a 1M context window
Count
4.6k tokens in Claude Opus 5.5, exact, measured 2026-11-08. With the Claude Code prefix mcp__…__ on each tool name: 4.8k. The o200k_base estimate is 2.8k. Counted again when the tool definitions change. Method.
Repository
https://github.com/yybd/multi-mail-mcp
Website
https://github.com/yybd/multi-mail-mcp#readme
Registry
active, updated 2026-11-07 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.64×.

Tool≈ Claude tokenso200k estimateShare of this server
get_attachment54233012 %
send_email51431311 %
create_draft50430711 %
modify_labels44527110 %
read_email44026810 %

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Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

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