Audience has support for Mailgun webhooks.
Once you have activated your Mailgun email account. A webhook will be generated by Audience.
audience-mailgun-webhook.png 14.34 KBAudience uses one webhook code for all of Mailguns webhook events. We sort the event by the type that Mailgun uses.
In your Mailgun > Domain > Sending > Webhooks
mailgun-add-webhook-for-audience.png 19.96 KBYou can add the Audience webhook for a number of events.