: Checking if email addresses are valid The host of the site I'm working on tends to shut off email if a certain number of fails take place. Needless to say this is a bit of a pain even

@Vandalay111

A lot of sites send confirmation emails. In the email it will have a code or a url that the user will use to activate their account. Setting up your web app to do this isn't very difficult.

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@Sent6035632

+1 For John Conde, but also you could think about switching to an host who won't penalize you for this kind of problem. I understand it is Ok to fight spam, but blocking an e-mail account for a paying customer may not be the best way to achieve this, there are tons of host who won't act like this, or you could think about getting a private mail server?

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@Kristi941

Send an email to the address. If it bounces back it is turned off. To check that programatically you'll need to pipe the any replies to a script that then parses the reply looking for the rejection message. Then log it in a database as being a bad address.

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