Click on 'Collaborators' in the left side bar.
Scroll down the page to the last message template 'Birthday wishes'.
Hover over the message template and click on the plus sign at the right.
Select the channel through which you want to send the birthday wishes: email, SMS, Facebook or Beeple chat.
Select the language of your message template.
Enter your birthday wishes in the blank field.
If desired, personalize your message with the first name of the collaborator by adding following code: {{COLLABORATOR_FIRST_NAME}}.
Mark the template as active.
Click on 'Create message template' to save your changes.
The template will now be sent to collaborators on their birthday. Pay attention: Birthday wishes are sent out once a day at 6 am. Adding the template the same day as a collaborator's birthday does not necessarily result in an automatic birthday message to that collaborator (unless the template was created before 6 am).