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verify email availability

I have to write a program to verify email address availability. i have to
verify thousand of email address. is there any way to verify the email in
..net instead. the requirement is to verify which email valid or invalid
Mar 2 '07 #1
3 1601
On Mar 2, 8:30 am, "Grey" <k...@jk.comwrote:
I have to write a program to verify email address availability. i have to
verify thousand of email address. is there any way to verify the email in
.net instead. the requirement is to verify which email valid or invalid
Why? Are you trying to verify email addresses before you add them to
your spam list?

Thanks,

Seth Rowe

Mar 2 '07 #2
On 2 Mar, 13:34, "rowe_newsgroups" <rowe_em...@yahoo.comwrote:
On Mar 2, 8:30 am, "Grey" <k...@jk.comwrote:
I have to write a program to verify email address availability. i have to
verify thousand of email address. is there any way to verify the email in
.net instead. the requirement is to verify which email valid or invalid

Why? Are you trying to verify email addresses before you add them to
your spam list?

Thanks,

Seth Rowe
There's a free webservice available at the following address:
http://www.webservicex.net/WCF/Servi...ls.aspx?SID=22

Pass in an e-mail address and it will tell you if its valid or not.
Not sure what it actually does, but it certainly does more than just
check for the existence of the (at) symbol etc.

Mar 2 '07 #3
"Grey" <kj@jk.comwrote in news:ui**************@TK2MSFTNGP02.phx.gbl:
I have to write a program to verify email address availability. i have
to verify thousand of email address. is there any way to verify the
email in .net instead. the requirement is to verify which email valid
or invalid
You need to run through a couple stages:

1. Check for the e-mail format. This can be done with regular expressions
2. Check for the existence of the domain - this can be done with DNS look
ups
3. Send an e-mail to the domain to see if the servers are valid
4. Finally, have a user click on a return like to verify ownership of the
e-mail address.

So basically depending on your needs, you may use some or all of the
methods above.

There are also commercial components which have encapsulated the above
checks.
Mar 2 '07 #4

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