How to connect SendGrid and Mailgun to Claude Code

Checked against Claude Code's documentation on Oct 26, 2026. Commands and config blocks are generated from the same install data as each listing page.

1. 1. Check what you need

   Nothing is installed locally for this hosted server. Claude Code needs network access to api.sessy.do.

   • It needs Authorization (next step).

2. 2. Get Authorization

   The only required value is a bearer token. The notes below point to where it comes from and what self-hosters change.

   • Authorization (required): Bearer token from your Sessy API keys page (https://app.sessy.do/api_keys). Self-hosters: point the URL at your own instance's /mcp endpoint instead of api.sessy.do. Setup: https://sessy.do/docs/mcp.

3. 3. Add Sessy — Amazon SES observability to Claude Code

   The command passes the token in a header, while the .mcp.json entry refers to SESSY_TOKEN instead. The last block sets that variable in your shell.

   claude mcp add --transport http --scope user sessy https://api.sessy.do/mcp --header 'Authorization: Bearer YOUR_TOKEN'

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   {
     "mcpServers": {
       "sessy": {
         "type": "http",
         "url": "https://api.sessy.do/mcp",
         "headers": {
           "Authorization": "${SESSY_TOKEN}"
         }
       }
     }
   }

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   export SESSY_TOKEN="Bearer paste-your-token-here"

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   • The command keeps the value in ~/.claude.json; the .mcp.json version refers to an environment variable, so nothing secret is committed.

4. 4. Restart or reload if it does not appear

   If the Sessy server is missing after you add it, read this step. It sums up when Claude Code connects servers and asks for approval.

   • The docs do not say a restart is needed after claude mcp add. Servers connect at startup and can be reconnected from the /mcp menu.
   • In an interactive session Claude Code asks you to approve servers from a project .mcp.json before it uses them; claude mcp reset-project-choices resets those answers.

claude mcp list