Postmatic is not sending email
If you are using Postmatic but having trouble getting mail to send from your site (either new posts, test emails, or comment notifications) the issue could be caused by one of two scenarios:
Are you using the free version of Postmatic?
The free version of Postmatic does not send mail using our outgoing service. Outgoing mail on the free plan is sent via your webhost. If you are on the free plan and having trouble sending mail please check with your host.
If you are using Postmatic Premium and still having trouble....
It could be an issue with the wp-cron configuration on your server. File a bug report and we can help you figure that out.