The Mail Queue page lists the mail items that are being sent via Email This Issue. The Mail Queue page is accessible from the Emails / Mail Queue menu.
Refresh the page by clicking the Active Queue button to show the current items.
If an email cannot be sent due to some errors, it is placed on the Error Queue The Error Queue contains detailed error information for each mail item. It helps detect the root causes of the error.
It is possible to resend the failed items. Resending means the mail item is placed on the mail queue for scheduled delivery.