Add "Happy birthday" messages
Add a cron process for birthdays.
If the birthdate field exists, is enabled and there are users with a birthday today, send a happy birthday message.
The message template should be something like this:
Hi [user's firstname], The whole team here at [institution name] would like to whish you a happy birthday! [Portal URL]
This should use the messaging API (internal mail and e-mail) but it should be sent straight away, independent of whether the user is on a delayed-mail list or not.
An administration option, enabled by default, should be available for that.
This should only be sent to active users.