How can we provide email validations in Salesforce?

Hi,

For the Email Validation in salesforce apex, you can use the regular expression as follow:-

String emailRegex = '([a-zA-Z0-9_\-\.]+)@((\[a-z]{1,3}\.[a-z]{1,3}\.[a-z]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})';