How to know email address exist ?

I know we can send a test email to make sure email address exist.

But have another way to check email exist that don't need send test ?

Anybody help, plz ?

 

no, not consistently...

 

You can check the emaila ddress by sending confirmation email. Other than that there is no other way

 

Hmm, there is no way to test if the email exists without actually sending a email to the email address. And you can configure the Bounce mail box , so that if the email address does not exist, you get a bounced email to your mail box and then you can be sure that the mail id does not exists. This way you don't have to wait for the email user to click on the link in your confirmation mail.

 

The only way that I could think that this could be done is to 'FINGER' the server. But not many server's will not allow this anyway. So the conclusion is that, no it is not possible (without sending a confirmation email).

 

As erandika1986 said, the best way is to send the confirmation email where user has to "click on a link". This is, I think, most reliable way

 

Well if you want to check the email of yahoo then u can goto http://profiles.yahoo.com/username

If you want to check hotmail email address, just make a dummy account and then add him on msn messenger

But its a limited answer which i am giving because everyone said the same thing so just thought of hotmail and yahoo.

But if you want to check other email addresses and then all the answers which are given above, are correct and there is no other way.

 

i think there is no way to checking if email address exist or not in on fly.

 

In spite of confirmation link you can also use tracking image, but it's not completly solving your problem because some clients does not show images by default.

Your image should be get by request made to your server that will track that user opened mail. You can use for example something like http://page.com/image.aspx?user={email}.

 

I think you can only check if someone did open the mail.

 

there is no way to check confirmation emaill address..

 

Do you mean that you want an asp script to check if the mailbox exists? If so, then no there is no way. You can check to see if an email address appears to be valid so that if someone is entering their email address on a form and they enter "ZZZZ" you can post back and provide a message that the address is not valid. You can also parse for free accounts like hotmail or gmail and not allow access to other areas of your site if it is a free account.

These are all standard functions.

/*tom*/

 

You checks in database fields.
...
Sql: ... usermail '%Request.form("txtmail")%'"...

 

You can try this site which is very good and very quick! Has bulk email verify and simple email verify! Supports also api keys for registration forms like forums, newsletters etc..
Try it, i have put 80.000 emails and all done!

 

Not regularly...

 

To make sure that there's an email server at the domain of the address, query the MX record for the domain. If it doesn't exist, query the A record for the domain. (You can write the code to return one or'ed with the other.) If neither one exists, the address doesn't point to a real email server.

Use normal RegEx to check the syntax of the address (only 1 @, no occurrence of .., no occurrence of .@ or @., etc.) You can no longer check the account name (stuff to the left of the @) on most servers, due to the VRFY command being disabled due to spammers.

 

One way is to check that valid TLD is present in the email. Another should be . All the above answers remain as true. Plus these two possibilities.

 

go to site http://verify-email.org/
write the email address and click to button
you will found you answer