MailChannels Email API (Send + Delivery Events)

Environment

Required:

• MAILCHANNELS_API_KEY (send in X-Api-Key)
• MAILCHANNELS_ACCOUNT_ID (aka customer_handle)

Optional:

• MAILCHANNELS_BASE_URL (default: https://api.mailchannels.net/tx/v1), MAILCHANNELS_WEBHOOK_ENDPOINT_URL

Domain Lockdown (DNS)

Create a TXT record for each sender domain:

• Host: _mailchannels.<your-domain>
• Value: v=mc1; auid=<YOUR_ACCOUNT_ID>