A list of SMTP and IMAP servers of popular ISPs

Email address validation

While email address validation deals with the actual existence of whether an email address exists or not, this process validates those that have been verified. The difference might seem little but they are completely separate processes run during both parts of the email validation process. One part of it is to validate email and the related domain’s existence while the other part concentrates on things like the risk involved with keywords within the email, high risky domains, suppressed email removal, complainers removal, spam trap email address removal, and custom TLD separation.

An email address although perfectly valid in terms of sending an email to, often involves validation against spam traps, complainers, and suppressed email addresses. It won’t end here – some advanced email list cleaning software also analyze for high risk keywords and domains, separate according to TLD’s you want to email to, and look out for actual bounces that are likely to occur if SMTP response wasn’t good enough to determine an email address validity.

We often have our email marketing customers ask this and we answer in this typical way. It purely depends on your business needs and your objectives. It can be done in three ways.

1) In real-time – Using our email validation API, you can have your form validated right at the point of entry. This includes support for websites, forum, registration forms, signup forms, leads forms, mobile forms, and any other forms you can think of. Using our API gives you that advantage of letting your customers know they have incorrectly entered their email address. After all, a wrong address means a sale lost (if you are only collecting their emails to get started, like a lot of businesses do). If you choose an API, against all the other things listed, it would prove useful to you and your business.

2) In batch processing – Most of our customers tend to use our batch-processing facility. This is because it gives you the convenience of uploading to our control panel and letting you download when your mailing list has been verified. Its often the simplest way to get started with email address validation. It reduces the technicality involved with implementing an API. The timing of it depends on the number of email addresses we have to validate. This maybe good for companies who have smaller databases and are not frequent mailers.

3) By automation – We have a number of ways you can use and we are continuously looking out for more ways to make it easy to carry out email address validation. You will be able to use FTP, Remote Database, Dropbox and much more to validate automatically after a set period of time. This allows you to have your email data validated so you can always have the clean mailing list ready to use for your email marketing campaigns.