What Are Cleaned Contacts In Mailchimp: Quick Tips

What Are Cleaned Contacts In Mailchimp: Quick Tips

February 19, 2025·Griffin Mott

Email marketing success depends on maintaining a healthy contact list. 

If over 3% of the emails you send bounce back, your emails may start going to spam.

When you use Mailchimp, you might notice some contacts marked as "cleaned" in your Mailchimp account.

Cleaned contacts in Mailchimp are email addresses automatically removed from your active subscriber list due to a permanent reason delivery failures like a hard bounce or repeated soft bounces. 

This automated cleaning process helps protect your sender reputation and improves your email campaign performance.

You can also use free email cleaning list tools online to optimize your delivery rate.

So, what are cleaned contacts in Mailchimp?

Key Takeaways

  • Cleaned contacts are automatically removed from your list to maintain email deliverability
  • Regular list maintenance helps protect your sender reputation and campaign success
  • Monitoring cleaned contacts can identify common problems like incorrect email addresses

Understanding Cleaned Contacts in Mailchimp

Cleaned contacts in Mailchimp are email addresses removed from your subscriber list due to delivery problems. 

These issues affect your email marketing success and costs.

Definition and Importance

A cleaned contact happens when Mailchimp marks an email address as undeliverable. 

This status helps protect your sender reputation and delivery rates.

Your email marketing success depends on maintaining a clean subscriber Mailchimp mailing list. 

Mailchimp counts cleaned contacts toward your audience limit and billing.

screenshot of mailchimp segment dashboard with red box highlighting where to create segment

You can view your cleaned contacts by creating a segment in your Mailchimp audience dashboard with the "Email subscription status | is one of | Cleaned" filter.

screenshot of created segment highlighting where to filter cleaned contacts into segment

Types of Email Bounces

Hard Bounces:

  • Permanent delivery failure
  • Invalid email address
  • Deleted email accounts
  • Non-existent domain

Soft Bounces:

  • Temporary delivery issues
  • Full mailboxes
  • Server problems
  • Email size limits

Handling Hard Bounces and Soft Bounces

Hard bounces get cleaned immediately. Your email can't reach these addresses, and Mailchimp removes them from future sends.

Soft bounces may become cleaned contacts after multiple failed attempts. Mailchimp tries to deliver to soft-bounced addresses for several campaigns before marking them as cleaned.

You can export your cleaned contacts list to review and verify addresses. If you confirm an address is valid, you can resubscribe it through a signup form or imported list.

Keep your bounce rate below 3% to maintain good deliverability. Remove invalid addresses quickly to protect your sending reputation.

Maintaining Email List Health with Cleaned Contacts

Regular list cleaning keeps your email marketing effective and improves engagement rates. 

Clean data leads to better deliverability and higher conversion rates.

Audience Data Management Strategies

Use Mailchimp's data management tools to monitor your audience health. Check your contact list weekly for invalid or outdated entries.

To review your data quality, click the Audience tab and select your list from the audience drop-down menu. 

Create segments to identify non-subscribed contacts and problematic addresses.

Export your contact segments regularly to analyze engagement patterns. This helps you spot potential issues before they affect your marketing performance.

Reducing Bounce Rates and Spam Complaints

Keep your bounce rate below 3% to maintain good sender reputation. Remove invalid emails promptly to prevent hard bounces.

Use double opt-in to verify new subscribers. This extra step reduces spam complaints and improves list quality.

Monitor spam reports closely. If you notice an increase, review your content and sending frequency immediately.

Utilization of Free List Cleaning Services

Consider using an email list cleaning service to validate addresses before importing them to Mailchimp

These tools check for syntax errors and inactive domains.

Professional data cleansing services can:

  • Remove duplicate contacts
  • Verify email format
  • Check domain validity
  • Identify disposable email addresses

However, paid services are not the only way. There are also free email cleaning services you can utilize:

Run clean-up processes quarterly to maintain optimal list performance. 

Best Practices for Email Campaigns

Following proven email marketing strategies will help you achieve higher engagement rates and maintain a strong sender reputation with your audience.

Building and Maintaining a Quality Contact List

Start with double opt-in verification for all new subscribers to confirm their interest. This extra step prevents invalid emails from entering your list.

Clean your list regularly by removing inactive subscribers and handling bounced emails.

 Pay attention to engagement metrics and remove contacts who haven't opened your marketing emails in 6-12 months.

Segment your audience based on:

  • Purchase history
  • Email engagement
  • Geographic location
  • Sign-up source

Effective Tactics for Improved Engagement

Send a welcome email to new subscribers within 24 hours of signing up. This helps establish a connection and engagement when interest is highest.

Test different elements of your email marketing efforts to see if engagement increases:

  • Subject lines
  • Send times
  • Email content
  • Call-to-action buttons

Keep your messages focused on one main topic. Write clear, compelling subject lines that match your email content.

Use mobile-friendly templates and keep your design clean and simple. Break up text with headers, bullet points, and short paragraphs.

Track your open rates and click-through rates to identify what resonates with your audience. 

Aim for 2-3 emails per week maximum to avoid overwhelming subscribers.

Frequently Asked Questions

Mailchimp's cleaned contacts system helps maintain email list quality and improves deliverability rates. 

These common questions cover key aspects of managing cleaned contacts effectively.

Should I delete cleaned contacts in Mailchimp? Keep your cleaned contacts in Mailchimp. These cleaned addresses help maintain good audience standards and prevent you from accidentally re-adding problematic email addresses.

You can review cleaned contacts periodically to fix any misspelled addresses if you have the correct information.

How can I permanently delete cleaned contacts from Mailchimp? You can remove cleaned contacts by going to your Audience section and selecting "All contacts." 

Create a new segment for cleaned contacts by filtering for "Email subscription status | is one of | Cleaned."

Select the contacts you want to remove and use the delete option.

Do cleaned contacts count towards my Mailchimp subscriber limit? No, cleaned contacts do not count toward your Mailchimp subscriber limit. Mailchimp only counts active subscribers when calculating your plan limits.

What is the difference between unsubscribed and cleaned contacts in Mailchimp? Unsubscribed contacts chose to opt out of your emails. Cleaned contacts are email addresses that bounced or were marked as spam.

Mailchimp automatically cleans addresses after hard bounces or multiple soft bounces.

How can I prevent emails from being marked as cleaned in Mailchimp? Use double opt-in for new subscribers to verify valid email addresses. Keep your list current by regularly sending email marketing campaigns.

Remove obvious typos in email addresses before importing them.

Can cleaned contacts resubscribe to my Mailchimp list? Yes, cleaned contacts can resubscribe through your signup form. They must use the same email address that was previously cleaned.

Make sure to verify the address is correct and active before adding them back to avoid repeat bounces.

Griffin Mott

Written by

Griffin Mott

Digital Marketing Consultant · Kansas City

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