How to Use Zerobounce for Email List Cleaning

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Maintaining a clean contact list is crucial for email marketers. Thankfully, several tools and services offer you a clean list in an instant. Zerobounce is one of the most reliable among these options. In this blog post, we’ll provide a comprehensive guide to using Zerobounce, from uploading your audience file to interpreting the results. For more list-cleaning tips, book a training with one of Pure Firefly’s email experts!

What is Zerobounce?

Zerobounce is an email validation platform designed to improve the quality of your email lists. Basically, you upload the email addresses, and Zerobounce tells you which are worth contacting! Their software uses advanced algorithms and an extensive database to root out invalid email addresses, spam traps, and other low-quality contacts. After getting a full analysis of your list from Zerobounce, you can remove risky contacts in order to boost both engagement and deliverability.

Why is List Cleaning Important?

List cleaning is vital for maintaining a healthy sender reputation. Sender reputation is based on a variety of factors, including spam reports, active opt-in, and the presence of spam traps in your audience. By maintaining a healthy sender reputation, you can maximize overall deliverability. This means more contacts will actually receive your emails in their inbox.

By regularly cleaning your email list with a service like Zerobounce, you can continuously remove invalid and inactive contacts, which reduces your bounce rates, and minimizes the risk of being flagged as spam.

Upload Your File to Zerobounce

To clean your email list with Zerobounce, you’ll first need to upload your audience file. The process is simple:

  1. Create an account or log in
  2. Click on “Validate New List”
  3. Drag and drop your file, or import from cloud storage
  4. Match the columns in your file to the labels in Zerobounce
  5. Mark whether or not the first row contains column headers
  6. Confirm if Zerobounce can remove duplicate emails
  7. Hit Validate!

Once you’ve uploaded your file, Zerobounce may take up to an hour or more to complete the validation process. Zerobounce list cleaning supports CSV, XLS, XLSX, and TXT files of any size.

How to Interpret Your Zerobounce Results

After the validation process is complete, Zerobounce will provide you with a detailed report on the quality of your email list. Emails will be divided into the following statuses:

  • Valid: These contacts have a bounce rate under 2% and are the safest to email.

  • Invalid: Invalid emails either do not exist, contain a syntax error, or have a full inbox. As a general rule, these contacts should be deleted.

  • Catch-All: These addresses are set up on a unique kind of domain that always returns a valid response – even if there’s no one on the other end. If you want to keep these addresses, try making a segment of catch-all contacts and observing their response to a campaign.

  • Spamtrap: These emails are fake addresses set up by ISPs & blacklist providers in order to catch spammers. Sending to a spam trap can have an immense impact on your sender reputation, so definitely delete any that Zerobounce finds! Check out Mailchimp’s article on spam traps to understand how these addresses work. 
  • Abuse: These contacts are typically real people that are known to report even innocent emails as spam. Avoid sending to these contacts, as even an inaccurate spam report can damage your deliverability.

  • Do Not Mail: These are most often role-based or company emails (like “sales@purefirefly.com”). While these addresses are valid, they’re typically poor contacts for most email marketing. Take a closer look at these addresses to determine whether or not you’d like to continue sending to them.

  • Unknown: As you might predict, Zerobounce can’t determine the validity of unknown contacts. Try re-importing them at no cost, or remove them from your audience. 80% of unknowns are invalid addresses.

Along with these statuses, Zerobounce also provides sub-statuses explaining why a contact may have landed in a particular status. They also provide additional predicted information about your contacts, including name, gender, and general location. 

What’s Next?

After you’ve cleaned your list using Zerobounce, you can choose how to make the most of the information provided! One great option is to archive any of the invalid, spam trap, and abuse contacts in your audience. You can even archive your full contact list and re-import the valid addresses.

You may also use your Zerobounce list cleaning results for segmentation. For example, you can use Zerobounce’s gender predictions to send targeted marketing based on gender. Or, you can create a tag for catch-all addresses and send a targeted campaign requesting that they re-confirm their subscription. 

However you choose to use your Zerobounce results, make sure you clear out those spam traps and send to your most valid addresses!

Get a Cleaner List with Pure Firefly

Ready to put your cleaner list into action? Pure Firefly, a trusted partner in email marketing, offers list cleaning services and comprehensive training to help you optimize your campaigns. Our team of email specialists have over 10 years of experience in marketing, design, and IT. 

Contact us today for a free quote on any email marketing service! We look forward to working with you soon.

*Note: This post may include affiliate links. If you sign up for Zerobounce list cleaning using links in this post, Pure Firefly will receive a small commission. We never promote services we do not use ourselves, and all opinions expressed are our own.

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