[DE] Mailgun customers often route multiple domains and regions. Bob sends through [DE] your configured domain [DE] and API key—so receipts, confirmations, and template messages inherit the same DNS reputation work you’ve already done.
[DE] Important: [DE] You’ll provide api_key [DE] and domain [DE] in tenant credentials. Validation endpoints may require specific Mailgun plans; we degrade gracefully when unavailable.
[DE] Teams standardized on Mailgun who want the same governed conversational layer as SendGrid users—without switching ESPs.