What should be done if the export log shows that emails were never sent?

If the export log indicates that emails were never sent, the first step to take is to check network connectivity. Establishing that there is a stable network connection is crucial since email sending relies heavily on the server being connected to the internet or the internal network. If there are issues with connectivity, the emails cannot be transmitted, resulting in them being undelivered.

Troubleshooting the network can help ensure that the email server is able to communicate effectively with external mail servers or internal systems. Once connectivity is confirmed, further analysis can be conducted around the email sending processes, such as server settings, configurations, or the specific email queues.

The other options, while they may be relevant in specific circumstances, do not address the immediate concern of connectivity. Notifying users immediately may lead to unnecessary concern if the underlying issue is not yet identified. Restarting the email server could be premature without first verifying connectivity. Reviewing the email template is essential in scenarios where emails are generated but not properly formatted or functional; however, if there's a connectivity issue, this step is secondary and may not resolve the issue at hand.