Does Post SMTP retry failed emails?

Thanks for your reply. We do not have fallback email setup, so all emails should be going through our default Post SMTP settings (microsoft 365). But we had some mysterious re-sends with a wocoommerce order email that intiially failed, so I was wondering what triggered it. Woocommerce says they don’t try to resend emails, and that it is all handled by WP or Post SMTP.

Here’s more detail on what happened:

1. Woocommerce order is successfully completed. Admin and customer invoice emails are triggered and sent. However, the sending fails because the customer typed an invalid email (@gmail.comcom). The log shows the email as failed for “Invalid reply-to”.
2. The next day, a little more than 24 hours later, the admin email is resent (but no one did it manually). And still fails because the reply-to address is still wrong. The customer email was not retried.
3. The third day, we manually fixed the customer’s email address, and manually triggered Woocommerce to send the customer’s invoice email. Upon doing so, the original admin order email was automatically resent at the exact same time, even though we never selected that email to be resent.

In this scenario, combined with the woocommerce and the failed email status, is it possible that Post SMTP’s re-send function could have also been triggered?

It wasn’t a big deal, but we are trying to understand why it happened. Thanks!

• This reply was modified 3 years, 1 month ago by LS.