The easiest and safest way to check whether an email address is well-formed is to use PHP's filter_var() function.
Email list verification is a process of determining whether a list of email addresses is valid and deliverable.
All major ESPs have their own set up custom grammar that impact whether an email address is valid in the real world.
We’ve integrated custom grammar checks for Gmail, Hotmail, and Yahoo into our email validator and are always adding more custom grammar checks as we discover these rules. can easily become and when it does, you can miss out on connecting with that customer.
Fortunately, PHP (5 and later) comes with a handy set of functions and filters that make testing for email address validity a snap.
Getting email addresses you collect — for a newsletter, say, or for password retrieval — to at least conform to standards (if not ensure ) is crucial, of course, and extremely tricky.
HP 5.3.3 and 5.2.14 had a bug ( related to FILTER_VALIDATE_EMAIL, which resulted in segfault when validating large values.
That’s why we built in a suggestion service into our email validation service.
When we have a suggestion for a common typos, we’ll return it along with invalid status, so you can offer the suggestion to your user.
regular expression pattern to separate the domain name from the email address.
The third parameter is a Match Evaluator delegate that represents the method that processes and replaces the matched text.