how to Check Email ID is valid

[sureshvijayan]

Hello,

I am developing an email newsletter in asp.net. How i can check the user submitted email id is valid or not. If an email id not exists, i need to show the user, the submitted email id is not valid.

if he submits [email protected] which is not valid id ... but email format is correct... here i need to check whether the id is exists or not ...

thankzzzzz

[koolprasad2003]

hi there,
if u r do this using asp.NET then try this

http://www.devx.com/tips/Tip/28334

regards
koolprasad2003

[gep13]

hi there,
if u r do this using asp.NET then try this

http://www.devx.com/tips/Tip/28334

regards
koolprasad2003

Hey,

The above checks to see whether an email address is well formed, but not whether it exists or not.

For that you need to do some other checks.

Here are some links that might help:

http://www.codeproject.com/KB/valida...Addresses.aspx
http://aspalliance.com/593_Email_Add...ng_IPWorks_NET
http://www.webservicex.net/WS/WSDeta...SID=51&CATID=4

Hope this helps!!

Gary

[mendhak]

Remember that the method is never 100% reliable as certain mail servers will not perform the handshake so as to avoid spammers from brute-force-guessing email addresses. It's best if your application does not rely on this kind of functionality. If you need to, then send a link to the given email address which the user clicks on to verify that the account does exist.