Are variables mandatory when customizing notification email content?

No. Variables are optional, and you can remove or replace them with any variable available for that notification while customizing the email.

However, some variables may be important for the purpose of the notification. For example, if an email is intended to provide an access or login link, removing that variable may prevent the recipient from completing the intended action.

We recommend keeping any variables that are necessary for the recipient to act on the notification.