Email SMTP Send Core Goal - Send outbound email via SMTP with env-configured credentials. - Attach local files into MIME email payload when requested. - Optionally append the sent message to IMAP sent mailbox for cross-client visibility. - Validate SMTP and sent-sync configuration before delivery. - Return machine-readable JSON status/error output. Workflow 1. Configure SMTP env vars (see and ). 2. Optional: configure IMAP sent-sync env vars and install when sync is enabled. 3. Validate configuration: 4. Send one email: 5. Send with attachments: 6. Send and sync to sent mailbox: Output Contra…