How Email Checker Tool Will Help You Reach Your Subscribers

Do you often feel like your email marketing could perform better? It definitely could! Increasing open rates and conversions is every marketer’s goal, and sometimes, a few tweaks here and there make all the difference. For example, integrating an email checker into your toolkit may be just what you need right now to boost your ROI. But how does an email checker work, and why is it so important to keep a clean email list? Let’s see.

What is an email checker?

An email checker is a piece of software that verifies your email list for accuracy. You’ll also encounter it under names such as email validation or email verification service, or email verifier

Usually, email checkers are services you access on dedicated platforms, where you simply upload your email list and get it back free of bad data.

Using an email checker improves your list hygiene and sender reputation

If you send marketing emails, your sender reputation is one of the most important aspects to consider. It’s what helps Internet Service Providers (ISPs) to decide where your emails go. 

Is your reputation bad? Then your campaigns will land in people’s Spam folder. In the worst cases – where you’ve let your list become extremely messy – your emails may be completely lost in transit. ISPs do not deliver emails from senders who don’t follow email marketing best practices.

Thus, you can see why using an email checker is paramount to your email marketing success. Keeping a neat email list is the first step towards higher open rates and better conversions.

Get rid of risky email addresses

In any email list, there are always going to be a few email addresses that are risky to use. Sending to them is a red flag for ISPs and for your email delivery service, as it shows you’re not taking care of your list. 

Here are some of the riskiest email addresses you could have in your list as we speak:

  • misspelled and other invalid contacts: they bounce and affect your overall reputation.
  • catch-all emails: not all of them will bounce, but some of them will, and impact your deliverability.
  • abuse accounts: these are owned by people who usually mark emails as Spam.
  • spam traps: they don’t belong to real people and their only purpose is to block spammers.
  • disposable emails: they auto-destroy and eventually bounce.

If you care about your email marketing – and you obviously do – it’s scary to think of the ways these email addresses sabotage your results. But there’s good news: an email checker will remove all these dangerous accounts from your list, and more.

There are two ways to use an email checker

It’s easy to get access to an email checker, as there are so many of them on the market. Also, they’re user-friendly so you won’t have to worry about learning how to use one.

To illustrate, ZeroBounce is an email list cleaner that allows you to upload your email list on the platform. Once it’s there, the system starts cleaning it. How long it takes depends on the size of your list, but usually, you get your results back in a few minutes or a few hours, at most.

There are two ways in which you can use an email checker:

  • by uploading and cleaning your database in bulk
  • by installing an email verification API on your signup forms

The API checks new signups in real-time, so you can rest assured that every new subscriber you get is genuine. Having an API on your signup and registration forms helps maintain email hygiene longer and prevents you from acquiring bad data.


Email marketing continuue to be a vital tool to promote your brand and grow your business, and there’s no sign of it slowing down. According to HubSpot, 93 percent of B2B marketers use email to get their content in front of people. So should you. Just beware of how sensitive your email list is, and how quickly it can go bad – around 2 percent of it becomes obsolete in just one month, Marketing Sherpa observed in a study. 

Always follow best practices and never add people to your list without permission. Also, use an email checker a few times a year to give your delivery and open rates a boost. 

By Mihaita Vulpe – Contributors   |   06/09/2019