Using Postmark Rebound to improve handling of bounced emails
Whenever Oh Dear detects something wrong with your site, it can send you a notification. We have multiple channels available: Slack, Telegram, webhooks, and many more. The most popular channel our users use is just simple mail.
Behind the scenes, Oh Dear uses Postmark to send emails. Postmark will inform us whenever a notification mail results in a hard bounce. A hard bounce means that the mail won't be delivered. The most common reason for this is that the mailbox doesn't exist (anymore). This can occur when somebody changes jobs, and the work email address no longer exists.