Skip to main content
Mailgun sends mail from your own domain: workflow Send with Mailgun, plus campaign, nudge, and automation email when you pick this connection.

​
Prerequisites

  • A Mailgun account with a verified sending domain
  • A Mailgun private API key
  • A From address that uses that domain (display name is optional)
  • Know whether the domain is on the US endpoint (api.mailgun.net) or the EU endpoint (api.eu.mailgun.net)

​
Connect

1

Open Add Integration

In the project sidebar, select Integrations, then Add Integration. Select Connect on the Mailgun card.
2

Enter credentials

Fill in:
  • Mailgun API Key — private API key from the Mailgun dashboard
  • Sending Domain — for example mg.example.com
  • From Address — for example Support <[email protected]> (must use the sending domain)
  • Region — US or EU to match where the domain lives
3

Wait for validation

The wizard checks the API key and domain. When it succeeds, you see Mailgun Connected!

​
Verify

On Integrations, the row shows Connected.
Send a test message to yourself. Confirm it is accepted in the Mailgun logs and that From matches the address you saved.

​
Use it

​
Agent tool

Enable Send with Mailgun on the agent or workflow Tools tab and select this connection.

​
Campaigns, nudges, and automations

Select this Mailgun connection wherever the dashboard asks which email integration to send with.

​
Limits

  • The From address must use the sending domain you entered.
  • Choosing the wrong Region fails validation or sending even if the API key is correct.
  • Mailgun (not Botcadence) enforces domain verification, DNS, and sending limits.

​
Troubleshooting

Recheck the API key, exact sending domain, From address, and US vs EU region. Confirm the domain is verified in Mailgun.
Check Mailgun logs for rejects or bounces. Confirm DNS (SPF/DKIM) for the domain. Try a recipient that is not blocking new domains.
Enable Send with Mailgun (not only Send email) and select this Mailgun connection. Send email uses Gmail.