Important Note: In January of 2020, Mailgun removed the ability to receive replies from their free tier. Those who created MailGun accounts prior to the change should be grandfathered in as far as being able to receive mail, but if you created your Mailgun account after December of 2019, you'll need to upgrade to Mailgun's lowest paid plan in order to receive emails in HighLevel. Please watch our How To Set Up Replies With Mailgun video for more information.

Please set up the domain or subdomain under US, not EU. Or else the subdomain or the domain you set up will not show up in Highlevel.