Add-on Automatically send scheduled emails by group & user.

[hello2029]

- Automatically send happy birthday emails, happy new year, ... to members.

I want to be able to edit, personalize each email by user group or specific user.
When it's New Year's day, I want the system to automatically send a congratulatory email or on user's birthday, send a happy birthday email.

The content I send I want to customize for each specific group and user.