I did some additional testing with WP Crontrol and manually triggering the fluentmail_do_daily_scheduled_tasks hook and I found an issue within https://proterra.com/public/wp-content/plugins/fluent-smtp/app/Hooks/Handlers/SchedulerHandler.php on line 56.
The notification email field defaults to {site_admin}, but line 56 is looking for the placeholder {admin_email} and replaces that with the actual admin email address. These two strings don’t match so the default placeholder will never work.
If line 56 is corrected to look for {site_admin} the email works. Or entering a real email on the summary page – that works too.
One additional issue – the inline HTML is not working correctly in Gmail – I see the span tags:
Emails Sent <span style="font-size: 12px; vertical-align: middle;">(6)</span>
Email Failures <span style="font-size: 12px; vertical-align: middle;">(7)</span>
Screenshot: https://rzfg.co/C5YeL2
Lastly – can this email indicate if a fallback method is used? That seems like one of the most important use cases here – to be notified if the primary connection has failed.
Thank you!