To manage emails, the "Store email to Database" option must be set in Administration > Global Settings > Emails.
To view all messages in the database, navigate to Administration > Services and Processes > Emails.
In preview, you can find an error message. This message shows why email sending failed.
- Resend: If the email was in "send" state, action will change it to "not sent". Invoking action on "Non-send" email has no effect.
Emails in state "Not sent" will be automatically resent by corresponding engine activation.
- Delete: Completely deletes email from database.
- History: General action. See corresponding KB.
- Export: General action. See corresponding KB.
Also, filters by the state are present:
- Failed emails
- Unsent emails
- Successfully sent emails