Email · A sending domain of your own

Connect your own Mailgun account

Send from a domain you have verified in Mailgun. The connection carries both the key and the domain, so it is unambiguous which identity a message leaves as.

Add a Mailgun connectionAll integrations
Scope. This integration sends Email. This provider has no delivery webhook wired yet: a send is recorded with the acceptance outcome and any error code it returned, not with a later delivery status. Routing and automatic failover, per-number pacing and segment accounting are SMS-channel features rather than Email ones: a Email send goes out on the single connection you configure. Opt-out suppression is applied to marketing sends on every channel. Whaleal Platform is a message orchestration layer: it calls Mailgun’s public API using your account. We do not resell message volume, do not mark up your Mailgun bill, and do not own your account.

What you need from Mailgun

Gather these in the Mailgun portal first. The connection form asks for exactly these fields and nothing more.

FieldWhat it is
apiKeyAPI Key. The key for the sending domain. The account-level key also works, but a sending key is the safer one to paste here.

Credentials are sealed with AES-256-GCM and the console only ever shows a masked value afterwards. Plaintext is never written to logs and never sent back to the browser.

What we configure on the connection

  • Sending domain. Required. Mailgun puts it in the API path, so it must match the verified domain exactly.
  • Sender address (From). Must be an address on that verified domain.
  • Default send pacing: 10 messages per second. This is a conservative starting point, applied per connection, and you can change it at any time. Your real ceiling is set by Mailgun — check your account quota and raise the value to match.

Why teams pick Mailgun

  • The sending domain is part of the connection, so the identity is explicit
  • Per-domain keys, so the credential can be scoped to one domain
  • Domain verification stays in your own Mailgun account

Worth knowing

  • A wrong or unverified domain fails at Mailgun rather than here — the error code is recorded on the send so you can see which check rejected it.

What stays on your side

These are yours to hold — and that is the point of bringing your own account: the relationship, the rates and the compliance stay in your name, not ours.

  • Account approval and billing terms
  • Domain verification, plus the SPF and DKIM records for the domain you send from
  • Sender reputation, and any blocklist remediation that follows from it
  • The quotas and rate limits Mailgun grants your account

Next

Whaleal Platform currently offers self-service connections to 6 SMS providers, 4 email providers and 3 WhatsApp providers. Underlying the SMS channel is an SMS adapter library of 33 adapters; the ones outside this list are unlocked on request rather than self-service.

Add the connectionHow Whaleal Platform works