- Add set_email_flags tool for IMAP flags (standard + custom keywords)
- Add unsubscribe_email tool with List-Unsubscribe header parsing
- Support RFC 8058 one-click unsubscribe
- Add UnsubscribeInfo model to email responses
- Add data field to OperationResult for extra context
- Include test.sh script for MCP server testing
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>