Store processing when email is rejected

[Dave224]

In fact, the ability to reliably detect that an email was successfully received does not actually exist. There is always something along the line that could refuse to transmit the success of sending/receiving a message as a matter of security/privacy.

I can understand the ability to reliably detect that an email was successfully received by the customer is a challenge, but is that true on the part from ZC running on a host's server to the host's mail server? If the mail server sends a rejected message back to ZC, what, if anything, does ZC do? Does it log an error?

[barco57]

No, it doesn't because the processing of a rejected or bounced email is handle by the email server outside of what Zen Cart can see. For ZC to handle that the newsletter functionality would have to be expanded to be more like something like phplist, which is Newsletter and email marketing software that you can host along side your ZC but allows for throttling to a sending level lower than your hosts hourly limit, bounce processing, etc because it accesses your email account direclty. ZC does not throttling and sends all emails as quickly as it can which triggers limits set by the host. Are you likely to see full newletter functionality in ZC...NO, in fact I argue it should be removed entirely and be replaced with the email export function so that users can take their list to places like Mailchimp and constant contact where you will get far more use out of it and better email analytics. Any store serious about their business, not a hobby, would need and want as much analytics as they can get from all sources including their marketing campaigns.

[swguy]

...If the mail server sends a rejected message back to ZC, what, if anything, does ZC do? Does it log an error?

A mail server doesn't send a rejected message back to Zen Cart. It sends a rejected message back to the email address of the sender. The Zen Cart software does not monitor email queues. As @barco explained, "No, it doesn't because the processing of a rejected or bounced email is handle by the email server outside of what Zen Cart can see. "