How to check an email address actually exists or not ?

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We know Internet is now ruled by a different kind of communication, we still use to reply on email for several reasons and yes it is also one of the most convenient way to transfer the information. But email address is not easy like Twitter and Facebook to authenticate; but other instance we can’t confirm whether it is genuine or fake easily. I got some useful tools to check whether an email addresses actually exits or not, you can see them below. Tool I tried is Verify Email Address and it is quite awesome. This will be really useful for newbies.

  1. Email Address Verified This means the email address is correct. They checked the email address syntax and also whether the mail server is working properly or not.

  2.  Email Address Is Not Valid Here the information says the email address “……@example.com” was not created by the administrator, but has a mail server configured using Google Apps and the email syntax is correct. So the email address is not valid or available.

  3. No MX Resource Records are Found MX (Mail exchange) Record is an entry in a domain name database that identifies the mail server that is responsible for handling e-mails for that domain name. Here the MX Resource Records are not found, so probably they might not have configured any mail server for sending and receiving mails. So any email address with “____@example.com” may not be valid.

   4. Invalid Email Address Syntax Normally an email address will look like “name@example.com”, but the one mentioned here is not, so obviously it is an invalid email address.

What Really Happens Behind? These screenshots gave simple explanation, what really happens is quite Geeky; you can check the process below.

Log:

Get MX for gmail.com... OK.
Connect to gmail-smtp-in.l.google.com... OK
= 220 mx.google.com ESMTP h5si1627720qcd.7
> EHLO email-verifier.net
= 250-mx.google.com at your service, [209.160.72.213]
250-SIZE 35882577
250-8BITMIME
250-STARTTLS
250 ENHANCEDSTATUSCODES
> MAIL FROM: <info@email-verifier.net>
= 250 2.1.0 OK h5si1627720qcd.7
> RCPT TO: <............@example.com>
= 250 2.1.5 OK h5si1627720qcd.7
> QUIT

Geeky? Simple Explanation Here.

1. First they get MX DNS records of the domain name to verify which mail server are used.

2. Then they check the mail server to see whether the username really exists.

3. After verifying with the email syntax and all, the results displayed.

That’s it, no big issues. Meanwhile you can also check out similar tools like Verify Email Tool and Verify Email.

Posted in: Blog, Email, Google, Google+, HowTo