Now many of you may wonder how you can reach great design with least number of essentials. Isn’t stuffing ‘more and more number of elements that speak for the purpose’ the right way to do it? Erm, not always, and in this write-up, you will see why.
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions.
Consider email address RFCs:
Look at HTML5 form input element (with type=email) regex pattern: