Validate email addresses

Scenario

Let’s say that you have a field named  ‘Email’ which you use to capture an email address and you want to ensure that users enter a valid email address.

Solution

This can be accomplished by adding a simple rule within the Logic screen that validates the contents of the ‘Email’ field.

1. Title: Email format validation
2. Conditions: Custom js function
3. Steps: Field – set custom error

Code

let emailRegExp = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/g;
getValue('Email').match(emailRegExp) == null​

Example

Once you have configured this it should work like this: