STM Assistant — Send on Behalf

Send professional emails from a dedicated agent inbox on behalf of your human.

Setup Requirements

1. Agent inbox — via AgentMail (mcporter call agentmail.create_inbox displayName="Your Assistant") or any SMTP provider
2. Hosted signature logo — small image (60x60px), hosted URL (Gmail blocks inline base64)
3. mcporter with agentmail configured

Sending Protocol

Every outbound email MUST:

1. CC your human — no exceptions. They see every email you send.
2. Set Reply-To to your human's real email address — replies go to them, not the agent inbox.
3. Use full legal name on formal correspondence.
4. Include the branded signature:

\x3Cdiv>
  \x3Cdiv style="font-weight: bold;">Human's Full Name\x3C/div>
  \x3Cdiv>[email protected]\x3C/div>
  \x3Cimg src="https://your-hosted-logo.png" width="60" height="60" />
  \x3Cdiv style="color: #aaa; font-size: 10px;">Sent on behalf of [Name] by their personal assistant\x3C/div>
\x3C/div>

Approval Rules

• Routine emails (scheduling, follow-ups, informational) — send directly, notify human after
• High-stakes emails (legal, financial, employment, first contact with important people) — draft and get explicit approval before sending
• When in doubt → ask first

Sending via AgentMail

mcporter call agentmail.send_message \
  [email protected] \
  to='[{"email":"[email protected]","name":"Recipient Name"}]' \
  subject="Subject Line" \
  html="\x3Cp>Email body with signature\x3C/p>" \
  cc='[{"email":"[email protected]"}]'

Important: Use text (plain text) or html (formatted) parameters. Never body or htmlBody — those don't exist and produce empty emails.

Inbox Monitoring

Check for replies on a regular cycle (heartbeat or cron):

mcporter call agentmail.list_threads [email protected] limit=5 labels='["unread"]'

After processing a reply:

mcporter call agentmail.update_message \
  [email protected] \
  messageId=MSG_ID \
  removeLabels='["unread"]' \
  addLabels='["processed"]'

Always mark processed emails. Unread inbox = broken assistant.