bbPress includes a feature that allows users to subscribe to forum topics, meaning that anytime a new reply is posted to that topic, all subscribed users will receive an email alerting them of the reply. bbPress does not, however, provide an option to customize the contents of this email, so that’s what this extension for bbPress does.
With this simple extension for bbPress, you can customize the email that is sent out to topic subscribers when a new reply is posted to a topic.
Once activated, you will have two new options in Settings > Forums that will let you configure the email and subject to your liking. See the screenshot below:Download Plugin