Email Address Verification

 You may receive an email from someone you don't recognise and want to quickly verify the email address or you have a mailing list and want to keep it up to date and need therefore to verify multiple email addresses.

Email Address Verification is the process of establishing the validity of an address. There are many online resources that can be used for single addresses but for validating mailing lists you require  PC based software.

Online verification

Online verification sites are:

www.addresses.com/email_verify.php

www.verifyemail.com

The catch all option when enabled gives misleading results as it will only verify that the domain name is valid and not the email address.

Offline verification

Offline verification tools are available from many sources that specialize in bulk email. Because the number one use of email verification is in the bulk email/newsletter business most of the suppliers of email address verification software also provide bulk emailing software.

• Email Verifier from Maxprog.com

• Email verifier  from sprika.com

• Email Verifier from G-lock

• Email Verifier from Ifunmp3.com

• Email Verifier from www.lencom.com

How Email Verification Works

Email verification works by following the exact same process as are followed when sending an email to the recipient except that no email is sent . The process is as follows:

1. The sender’s SMTP mail server determines the addressee’s mail server using a DNS Lookup (MX records).

2. The sender’s SMTP mail server connects to the recipients mail server via the SMTP protocol and pretends to transmit a message.

Usually about 30% of unavailable addresses which can be determined are discovered on the first checking stage (DNS request). To discover the other 70% the 2nd stage is necessary (SMTP connection emulation).

The 2nd  stage usually takes more time and  the complete two-stage email address verification check takes the same time as sending a short message.