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Email validation process

Our list cleaning process

We are known to have the most comprehensive email validation process in our industry. We were able to achieve this after years of R&D into our validation methods. Our innovative process consists of two sub-processes – pre-validation and post-validation, each ensuring you have the most valid list of email addresses that you can be confident of hearing a response from. Don’t take our word for it…see 100’s of testimonials praising our innovative validation methods.

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Gigantic AI indicators & databases

1000s of Spamtrap indicators

400+ of Complainer indicators

2000+ Temporary emails

100,000+ Typo corrections

12 stage comprehensive list cleaning process

1. Deduplication

We get rid of all the duplicate email addresses on your mailing list. This allows your list to contain only unique addresses and thereby reduce your unsubscription rate significantly.

2. Domain

We run a thorough scan of all the domains on your mailing list. We scan them and classify them as being parked/invalid/non-working domains. This helps in optimizing your open rates.

3. Spamtrap

Each email address on your list is scanned against our spam trap indicators that we derived from our 380+ Mil DB. Its the most comprehensive method to avoid getting your IP’s blacklisted

4. Complainers

All email addresses on your mailing list is scanned for a match against our gigantic complainers database. If a match is found, that email will be automatically set aside to inform you about the risk.

5. Risk

Our system scans across millions of email addresses and knows quite well what are deemed high-risk keywords in an email and high-risk TLDs. It will intelligently separate these out for your benefit.

6. Syntax

Any email address with invalid syntax is automatically taken care of. You don’t need to worry about our system skipping these addresses. It will accurately determine what is an email address and what isn’t.

7. MTA

Our scan goes much deeper than just email address. Each email address is checked for its MX records validity. All non-working and invalid MX records are efficiently dealt with.

8. Suppressed Email

Do you have a collection of email addresses that have been deemed unsafe or invalid or have complained before? We can make sure your new list doesn’t contain these email addresses.

9. Unbalanced Delimiter

Our system is intelligent enough to identify email addresses containing out of balance delimiters. Our algorithm is complex enough to find these records with unbalanced delimiters.

10. Mailbox Error

With real-time responses from MTA, we can easily classify and segment email addresses outputting various mailbox errors including messages like “Mailbox full” (classified as soft bounce).

11. Custom TLDs

Do you have specific custom TLD’s that you want out of your mailing list. We can make it happen. Our system is advanced enough to identify and pick out those TLD’s that are unwanted.

12. EV Score

Score is allotted by our system which shows the quality of the email address you have on your list. Just because the email address is valid doesn’t mean it’s a good email to send to.

Frequently asked questions (FAQ)

How does your email validation process work?

Over the years, we have developed a set of processes that help us determine the existence of an email address. Our system is programmed to carry out email validation in two sub-processes – pre-validation and post-validation. Pre-validations are steps taken before the actual validation begins. They include things like deduplication, spam-trap scan, complainers scan, risk checks, syntax checks, suppressed email removal, and unbalanced delimiters. Following from there, the post-validation kicks in. It involves domain checks, MTA checks, Mailbox Error checks, Custom TLD checks, and EV score allocation.

What is spamtrap email address?

Spamtraps (aka honeypots) are emails that are created solely to lure spammers in. In email marketing terms, it’s a bait that you may fall victim to if you are collecting email addresses from sources and emailing without their permission. We have a large database of these spam-trap email addresses which help us derive spam-trap indicators that we use to validate your mailing list against. If we detect any of your email addresses matching our indicators, we will automatically mark that email address helping you to stay far from these traps. When you end up sending an email to one of these email addresses, your IP is recorded and you will be blocked from sending any further emails to that ISP, or quite simply, they will place all emails coming from you in the spam folder (away from user’s inbox).

What is complainer’s email address?

Complainer’s email address quite literally means email addresses that have been known to complaining in the past in regards to receiving bulk emails from people. These are people who have exclusively listed their email addresses to opt-out of any unsolicited bulk emails. These users are recorded as being generally reluctant to receive any advertising or promotional material. We have a large number of sources where we obtain this information from and therefore help you in achieving lower spam complaints. These users don’t want to receive any sort of bulk emails and therefore it’s best not to send them any. By avoiding sending emails to these users would mean better deliverability rates for your email campaigns.

What checks do you run on each email address and what’s their purpose?

We run several checks against each email address you provide to us. These include domain validation, risk validator, syntax verifier, mta validation, unbalanced delimiter check, and mailbox error check. Domain validation tries to eliminate email addresses that are associated with dead domains (AKA non-existent domains). This removes a majority of email addresses, which have never been registered or have been registered before but now in an expired state. Risk validator measures the risk associated with particular keywords and domains. Think of it as a scale whereby our system tries to measure the possibilities of it being non-existent against it being existent. Syntax verifier is a module within the validation process that enables email addresses without proper syntax to be automatically removed. In general, all email addresses have a standard that they must adhere to. Failure to adhere is likely to causes errors and therefore likely to be non-existent. MTA stands for Mail Transfer Agent or Mail Relay. It’s software that transfers emails from one computer to another. If there is no MTA available or no response from one, likely, no email addresses passing through it would work. An unbalanced delimiter check relies on a similar principle as that of a syntax check but is more complicated in design. In simple terms, it tries to find any ‘outliers’ in the way email address looks and marks it with appropriate status. Mailbox error check is when sets of messages are exchanged between our verification programs to that of the email service provider causing errors while intending to transfer mail. This is also another sign of the email address being invalid.

What email validation options are available to us?

We offer a couple of options for our users to customize their email validation job. Not just do they include the option to validate against our spam-trap indicators and complainers but they also can utilize suppressed emails, deduplication, custom TLDs, and EV score processing features. If you have a set of users who have explicitly asked you not to email them, simply upload that list to our control panel and we will make sure they are not included in any of the email validation jobs you launch. This helps you keep away from complaints from unwanted emails from your company. You also can choose where you would like the duplicate email addresses to be removed or kept in the list as they are. Another neat feature is the ability to automatically get rid of custom top-level domains. Don’t want any “.co.uk” email addresses in the list? No problem, we can get those email addresses kept aside upon your request.

I’m still unsure of how one of the features works?

No problem! Just give us shout out through our contact page. We offer our customers a number of ways to get in touch with us and our friendly staff will gladly answer any questions you may have.

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