Add jmap-mcp to required reading

Author: turian

README.md

@@ -47,6 +47,7 @@ All output is JSON with `ok`, `command`, `meta`, and `data`/`error` fields.
 ## Required Reading
 
 - [Claude Code Email Productivity: MCP Agents](https://harper.blog/2025/12/03/claude-code-email-productivity-mcp-agents/)
+- [jmap-mcp](https://github.com/obra/jmap-mcp)
 
 ## License