A clean email list is one of the many factors that impact email deliverability and conversions. Unfortunately, the average email list loses its value over time. A significant number of your email addresses may become inactive or invalid with time, resulting in more hard and soft bounces per email campaign. Furthermore, If you use purchased email lists (which are known for containing spam traps) or send emails to uninterested subscribers who flag your emails as spam, it will trigger the ESP SPAM filters. It eventually damages your sender’s reputation, and all of your subscribers will begin to discover your emails in SPAM. To improve your deliverability and ROI, you should scrub your list regularly (and keep your email list clean).
In this article, we’ll explain why email scrubbing is essential, which emails to scrub from your list, and how GMass automates this process for you.
This Article Contains:
(Click on links to jump to specific sections)
What is email scrubbing?
When should you scrub your email list?
Benefits of email scrubbing
How to maintain a clean email list
How GMass automates email scrubbing for your campaigns
How to scrub (clean) your email list
What is email scrubbing?
Email scrubbing is removing all inactive, invalid, irrelevant, and unengaged email addresses on your list. When you remove all inactive users from your email list, you ensure that you only email people who want to receive your emails.
Email scrubbing reduces the size of your email list and improves czech republic phone number library its quality. A well-managed email list is far more valuable than an extensive list filled with uninterested and inactive contacts. In addition, cleaner email lists result in better deliverability, open rates, and click rates. As a result, email scrubbing increases conversions and overall campaign ROI.

Here are some of the email IDs you should scrub while cleaning your email list:
Inactive/invalid email addresses that cause bounces
Low quality, purchased email lists and email addresses that are associated with spam traps
People who didn’t opt-in to your list
Subscribers who have been inactive for an extended time or have extremely low open and click-through rates
Unsubscribes or email addresses that have flagged you as spam
Duplicate email IDs
When should you scrub your email list?
When and how often should you clean your email list? It’s all relative to your business and your email list type. To keep your email list hygiene, we suggest scrubbing it several times a year. The following are some warning signs that it’s time to clean your email list:
Email campaigns are not generating the ROI they once did.
Your email campaign has poor deliverability. Many of your emails end up in spam folders or aren’t delivered.
The bounce rate is abnormally high: If the email IDs are incorrect or no longer valid, the email servers reject messages and “bounce” them. If a high percenta