How do loyalty messages, emails and the birthday gift work?

Message members, the member round-up and reward-unlocked emails, the yearly birthday gift and Invite a friend.

Part of How do I set up a loyalty scheme?. This part covers keeping in touch with members: Message members, the round-up and reward-unlocked emails, the birthday gift and Invite a friend.

Emails, messages and the birthday gift

Related: How do I set up a loyalty scheme? · How do birthdays work? · How does "Invite a friend" work in loyalty? · What do members see on their wallet pass?