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by Segun Olateju - 4 years ago (2015-09-16)
I need a PHP and AJAX script to check if email address exist on gmail, Yahoo and other domains.
1. by Alpesh Koyani - 8 months ago (2019-07-18) Reply
This class can perform email validation by several methods, including simulating a delivery attempt to the destination SMTP server.
It may not be sufficient for some cases of servers that accept all messages and only bounce them later but it can help you detect many invalid addresses including some that the user typed incorrectly.
Here is an article explaining how the email validation works.