If you need to use email address in your data form, choose "Email" option when configuring the field in it.
For example, you can use it to provide personal email address of a new employee in "Employee Onboarding" process. With this field you can make sure that information will be provided in the correct format e.g. firstname.lastname@example.org
Steps to create email address field:
Go to "Data form" tab, enter the field name and choose "Email" type.
2. When you're finished with your data form, please configure visibility settings for every field in every process task.
3. When you start process from this template, task assignee with access to this field (editable or required visibility setting) will see it in the following way: