Validate an Email Address in Power Apps
A common request when building Power Apps is to validate the email address of a textbox. This can be done easily using the IsMatch function. The function also does all kinds of validation using regular expressions. The Match.Email property can be used to check if it’s a valid email automatically.
If(
IsMatch(
txtValidationEmail.Text,
Match.Email
),
true // The email address is valid
false // The email address is not valid
)