Picture two emails hitting someone's inbox on the same day. One is an abandoned cart campaign with a reminder that arrived an hour after they left your site. The other is your monthly newsletter, which went out because it was the first Tuesday of the month. They could have the same subject line, the same product, the same offer. One was written for this person at this moment. The other wasn't.
Trigger campaigns are the first type of message. They send in response to what customers....