how can i check if an email address is still valid without emailing them?!?

Question

i want to check if an email address is still valid and working without emailing them how can i do this!?!

Answer 1

no way. Usually, to check, sites send a confirmation email to that mail address with an account activation link. To check if it's in the correct format, use this regular expression (which tests for username@domain.*, where username can be any valid username like abc_def, or abc.def, domain can be one word like yahoo, gmail etc, and - can be any text(com, co.uk, org.uk, etc))



RegExp:

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^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$

Answer 2

What do you mean by valid?



1: The email address technically works.

good: [e-mail]

bad: ajfekjafekjefkje



Solution: Check it with PHP. there's a whole bunch of rules to determine what is a valid or invalid email.



2: The email actually works.



Solution: Make them validate their email. (Or you could email them and a fake email will send your message back. ... but if they've used someone else's email then they'll delete your message and you won't realize there's a mistake.)

Answer 3

the web pages that for registering % a valid e mail tackle, bypass there , attempt registering once you % to sign in there , use that e mail tackle , it examine it relatively is that e mail valid or no longer