Send emails from WhatsApp messenger bridge with confirmation

[williamjameshandley]

Feature request

Allow sending emails via the WhatsApp messenger bridge. The flow should be:

1. User asks Claude (via WhatsApp) to send an email
2. Claude drafts the email and presents it to the user (From, To, Subject, Body)
3. User confirms via WhatsApp ("yes", "send it", etc.)
4. Claude sends the email via mcp__email__send

Context

Currently the messenger bridge handles incoming messages and can respond with text/media, but there's no workflow for composing and confirming outgoing emails. The confirmation step is critical — emails should never be sent without explicit user approval.

Implementation considerations

• The draft=True → confirm → send_draft pattern already exists in the email MCP tool
• The messenger bridge needs to track pending drafts per conversation (state between turns)
• Confirmation should be unambiguous — require explicit "send" or "yes" rather than inferring from context
• Show the full draft (From, To, Subject, Body) before confirmation so the user can review on their phone

[m13v]

the confirmation step is the critical design decision here. one thing that trips people up: WhatsApp conversation context resets between turns unless you explicitly persist it. if the user sends a voice note instead of 'yes', or types something ambiguous before 'send it', your intent detection needs to handle that.

a simple pattern that works well: persist the draft state in a file keyed to the conversation ID, not in-memory, so it survives if the bridge restarts between the draft and the confirmation. also worth adding a timeout - if no confirmation comes within 10-15 minutes, auto-expire the draft and notify the user that the draft was discarded. people often forget about pending confirmations.

one more thing on the show-full-draft-before-confirmation requirement: WhatsApp truncates long messages in preview. if the email body is long, show a truncated preview in WhatsApp and make it clear the full version will be sent.

[m13v]

for reference, here's our WhatsApp MCP server for macOS that handles chat state, contact search, and message sending as structured tools: https://github.com/m13v/whatsapp-mcp-macos

and the tool execution layer that manages state across multi-turn agent interactions: https://github.com/m13v/fazm/blob/main/Desktop/Sources/Providers/ChatToolExecutor.swift