I am looking for paid help. All emails completely stopped working on my Discourse site. No activation emails are being sent and no emails are being received by regular users with summary of new posts. No e-mails are being sent at all.
The e-mail service is MailGun and everything is fully paid and operating. I am not IT familiar and therefore I can’t tell what is wrong. Most likely the API isn’t properly synced with the Mailgun service.