Mailchimp Integration
You get 25 free email validations when you sign up for CampaignKit. After that, you can purchase additional validations in the CampaignKit dashboard.
CampaignKit integrates with Mailchimp using OAuth to verify contact email addresses automatically, eliminating the need for manual data import and export.
How It Works
The Mailchimp integration allows you to:
- Bulk validate all your contacts’ email addresses without import/export
- Connect multiple accounts - Works with multiple Mailchimp accounts simultaneously
- Tag-based filtering - Invalid and risky contacts are automatically tagged
- Secure OAuth connection - Uses Mailchimp Marketing API for safe access
CampaignKit uses the Mailchimp Marketing API to communicate securely with your Mailchimp account.
Tags Created
CampaignKit uses tags to mark validation results within your Mailchimp audience:
- invalid - Email address is invalid and will bounce. Remove these contacts before sending campaigns.
- risky - Email address is risky (role-based, spam trap, or disposable email). Use with caution.
After validation, you can filter your audience using these tags to clean your lists or create targeted segments.
CampaignKit never removes or modifies your existing contact data. Validation results are only stored as tags in Mailchimp.
Setup Process
Step 1: Navigate to New Integration
In CampaignKit, go to New Integration and select Mailchimp from the list of available integrations.

Step 2: Log in to Mailchimp
CampaignKit will redirect you to Mailchimp’s secure login screen. Enter your Mailchimp username and password, then click Log In to proceed.

Step 3: Authorize the Connection
Mailchimp will display a consent screen showing what permissions CampaignKit is requesting. Review the permissions and click Allow to grant CampaignKit access to your Mailchimp account.

Step 4: Start Bulk Validation
Your accounts are now connected! To validate your existing Mailchimp contacts:
- Navigate to Integrations in the CampaignKit dashboard
- Click Edit on your newly created Mailchimp integration
- Click Validate in the bottom right to start the bulk validation process

How Validation Works
Once you start the validation process:
- CampaignKit retrieves contact email addresses from Mailchimp via the API
- Each email is validated using our multi-layered verification process
- Contacts with invalid or risky email addresses are tagged in Mailchimp
- You can view the validation results directly in your Mailchimp account
The validation typically completes within a few minutes, depending on the size of your audience.
Using Tags to Filter Contacts
After validation, you can filter and manage your Mailchimp contacts:
Remove Invalid Contacts
- In Mailchimp, navigate to your audience
- Filter contacts by the “invalid” tag
- Review the list and unsubscribe or delete these contacts
Segment Risky Contacts
- Create a segment for contacts with the “risky” tag
- Use this segment cautiously or exclude it from high-volume campaigns
- Consider re-validating these contacts periodically
Clean List Maintenance
- Regularly validate new contacts as they’re added
- Remove invalid contacts before sending campaigns
- Monitor your sender reputation by keeping your list clean
Privacy & Data
CampaignKit follows strict data protection principles:
- Secure OAuth - Uses Mailchimp’s OAuth 2.0 for secure authentication
- No data deletion - We never remove contacts from your Mailchimp account
- Minimal access - Only reads contact email addresses for validation
- GDPR compliant - All processing follows GDPR requirements
- Tags only - Validation results are stored as tags, not custom fields
Need Help?
If you encounter any issues setting up the Mailchimp integration or have questions about how it works, please contact our support team. For technical issues with Mailchimp itself, please refer to Mailchimp’s support documentation.