With a welcome message, you can greet new subscribers when they first opt-in to receive Messenger notifications from you. This type of message helps you get your relationship with your subscriber off to a great start. You might want to include a special discount or another incentive, to make your new subscriber feel valued and encourage them to make a purchase. Welcome messages are sent automatically whenever a new subscriber signs up - so once you’ve set your message up, you can sit back and forget about it.