That plugin could be the issue. I did a quick search for it, and it looks like it replaces the wp_mail function. My plugin is looking for a true or false return from the wp_mail function to let it know if the reminder was sent or not. And, it is looking for exactly true ( === instead of == ). So, I’m guessing the mandrill plugin is not returning true after sending the email, and my plugin just keeps trying again with every CRON call.
If you want to test that theory, maybe get rid of the IF statement on line 227 in my class-pta_sus_emails.php file, so that it processes all those things within the brackets for the IF statement no matter what my function returns.
In other words, take this block of code:
if ($this->send_mail($event->signup_id, $reminder = true) === TRUE) {
// Keep track of # of reminders sent
$reminder_count++;
// Add reminder message to reminders_log
$reminders_log .= $this->last_reminder;
// Here we need to set the reminder_sent to true
$update = array();
if ( 1 === $event->reminder_num ) {
$update['signup_reminder1_sent'] = TRUE;
}
if ( 2 === $event->reminder_num ) {
$update['signup_reminder2_sent'] = TRUE;
}
$updated = $this->data->update_signup($update, $event->signup_id);
}
and change it to:
$this->send_mail($event->signup_id, $reminder = true);
// Keep track of # of reminders sent
$reminder_count++;
// Add reminder message to reminders_log
$reminders_log .= $this->last_reminder;
// Here we need to set the reminder_sent to true
$update = array();
if ( 1 === $event->reminder_num ) {
$update['signup_reminder1_sent'] = TRUE;
}
if ( 2 === $event->reminder_num ) {
$update['signup_reminder2_sent'] = TRUE;
}
$updated = $this->data->update_signup($update, $event->signup_id);
My send_mail function just puts the email together and returns whatever value is returned from wp_mail. So, if you modify that code, it’s just assuming that every email is sent correctly (usually the case anyway, wp_mail should rarely return false unless there is a problem with the mail server).
