Formlets provides the capability to easily set a custom Input Icon for Text Fields. Email, Phone and Date fields, by default, have a pre-selected icon which can be altered by preference.
From the Formlet Builder, select the Field tab
Scroll to Field Icon section
Select Enable Icon
Select desired icon from the dropdown list
The position of the icon can also be updated to be on the left or right of the field.
To update the position of the icon, select L or R from the Position switch selector.