I recently built a Nintex Form that included a field where the user was asked to fill in their email address. The form needed to verify that the user was entering a valid email address.
This can be accomplished using a Regular Expression in the settings of the form control. Below are the steps and Regular Expressions I used for validation the email address entered.
- Add a Single Line Textbox control to the form.
- Open the Control Settings and expand the Validation section.
- Change the “Use a regular expression” choice to Yes.
- Enter the one of the regular expressions below in the “Regular expression” field.
- Enter your custom validation message in the “Regular expression error message” field (for example, “Please enter a valid email address”).
- Save and publish the form.
Below is the main regular expression I have used to validate an email address on a form.
I have also used the regular expression below to validate an email address. It’s much simpler but does not check as extensively for certain patterns. It does check for a 2-4 domain extension after the period.
Kudos to Eric Harris for first sharing this in his post on the Nintex Xchange site: Simple email validation for forms