It didn’t work either. =/
It didn’t work unfortunately, I tried using both fields (start_time and expire_time) with correct timestamps.
I guess it’s because it isn’t related to the user custom fields.
Thank you for your reply.
It gives a red error with Reply-To, and it sends normally if I remove it.
I already checked the FAQ.
I already tried the SMTP plugin.
It doesn’t send the email and it gives an error message for the person.