Inbound acknowledgement / echo bot on Mailtrap Inbound.
For opted-in / inbound conversations only — not cold outreach.
cp .env.example .env
# fill MAILTRAP_API_TOKEN, MAILTRAP_WEBHOOK_SECRET, FROM_ADDRESS
npm install
npm startPoint the Mailtrap Inbound webhook at http://<host>:3000/webhook (use a tunnel such as ngrok for local testing).
Uses the production Email API with category: chat-sdk on outbound replies — not Sandbox.