Is there a limit to the number of EmailSMS messages that someone can receive?
Yes. In any given 7 consecutive days a recipient cannot receive any more than 1,000 EmailSMS messages. However, this is a “rolling” total, so that if you send someone 300 messages in day 1 and reach THEIR 1,000 limit on day 7, then in day 8 you will be able to send them another 300 messages AGAIN.