email verifier tool

5 Things to Look for in an Email Verifier

Choosing the right email verifier for your business can sometimes be difficult. There are lots of companies out there that clean email lists – which one should you go with? We put together a short guide to help you make the best decision.

Here are 8 things to look for in an email verifier.


A well-equipped email verifier – not the ones you find online for free – should be able to offer you a suite of features to make a real difference in your email deliverability.

Let’s see what the essential services of an email verifier are

Email bounce checker – identifies and removes invalid email addresses to reduce your email bounce rate and help you reach your subscribers.

Spam trap detection – scans your database and eliminates spam traps, which are emails created by Internet Service Providers with the sole purpose of luring in spammers. A good email checker should be able to identify spam traps.

Disposable email detection – weeds out temporary email addresses that add no value to your email list.

Abuse emails removal – takes care of known email complainers, who have a habit of marking emails as Spam. They affect your sender reputation and it’s best to not email them.

Catch-all email detection – isolates email addresses set up to receive all emails targeted to a certain domain. Sometimes, catch-all emails are rejected and bounce, thus affecting your deliverability.

The ZeroBounce advantage

Apart from all the features listed above, ZeroBounce comes with two more extra-services: our Email Append feature, that adds missing information about your subscribers, such as their name and location; and ZeroBounce A.I., the new email address scoring system that gives you a quality score on each email address in your list. ZeroBounce A.I. is very good at analyzing valid catch-all emails.


Not all email verifiers promise a certain accuracy rate. It’s certainly a question we advise you to ask before you make any purchase. At ZeroBounce, we guarantee a 98% accuracy on your email verification results.

Money-back Guarantee

Another important aspect is to make sure your email verifier is going to provide you with a refund in case the results don’t meet your expectations. From our own market research, we’ve learned that very few email verification companies are confident enough to offer a money-back guarantee. ZeroBounce does provide one, and you can read more about it here.

Data protection

The General Data Protection Regulation (GDPR) has brought dramatic changes in the way businesses handle consumers’ private information. When choosing an email verifier, read their privacy policy carefully, make sure they’re GDPR compliant, and learn as much as you can about how they manage your data. Here you can find ZeroBounce’s list of certifications and accreditations.

24/7 Customer Support

Let’s say you’ve made your choice and you’re getting ready to start cleaning your email list. But the platform you’re using is complicated and you just can’t figure out how the system works. You reach out to customer support, but you only get a reply after a few hours or during the next business day. Kind of frustrating, right?

With ZeroBounce, you have access to 24/7, 365 days a year free customer support. Whether you’re in the U.S., Europe or Australia, someone is always going to be online to guide you through the process.

What do you look for in an email verifier? We’d love to hear your answers!