There is a requirement in our project. We are using cq mail service to send emails. Current approach is we show error message if connection to smtp server fails and mail is not sent. But now as per new requirement the email should b stored in some queue and processed when connection is restored.
Can anyone suggest how it can be done?
As per my understanding, you can create a queue using API the Queue API at  and listen to Day CQ mail Service failure Topic in that queue to reprocess those events.
You can read more about this at