Learn how to import contacts into ActiveCampaign with our comprehensive guide. Enhance your marketing strategy and boost engagement now!
Published on October 21, 2025
Importing contacts into ActiveCampaign is a critical step in setting up your marketing and sales automation. Whether you’re migrating from another platform or starting fresh, this guide will walk you through the process of importing contacts via CSV files and API, ensuring a smooth and error-free experience.
Before importing, ensure your CSV file is correctly formatted to avoid errors:

File Format:
Required Fields:
Field Formatting:
Remove Unnecessary Data:
For more details on how to prepare your CSV file, check out ActiveCampaign’s guide on preparing CSV files.

Follow these steps to import your CSV file:
Access the Import Tool:
Upload Your File:
Map Fields:
Select Lists and Tags (Optional):
Import Options:
Advanced Options (Optional):
Start the Import:
For a detailed walkthrough, visit ActiveCampaign’s CSV import guide.
For advanced users and developers, ActiveCampaign provides an API endpoint to import and sync contacts programmatically. This is ideal for integrating contact management with your existing systems.
Create an API Key:
Use the API Endpoint:
Request Format:
{
"contact": {
"email": "[email protected]",
"firstName": "John",
"lastName": "Doe",
"phone": "123-456-7890",
"tags": "imported,api"
}
}
Response Handling:
For complete API documentation, refer to ActiveCampaign’s API reference.
If you frequently gather leads from LinkedIn or other online sources, consider using third-party tools like LinkActive, our Chrome extension for ActiveCampaign. With LinkActive, you can:
Get Verified Email Addresses:
Add Contacts in One Click:
Save Time:

Learn more about LinkActive and how it can improve your workflow.
Start Small: Test the import process with a small batch of contacts (5-10) to ensure everything works as expected.
Use Tags: Apply tags during import to segment your contacts easily.
Break Up Large Files: If your contact list is large, break it into smaller files to speed up the import process and reduce errors.
Check for Duplicates: Ensure your list is free from duplicates before importing. ActiveCampaign matches contacts by email address.
Import Errors: If you encounter errors, check your CSV file for incorrect formatting, missing email addresses, or duplicate fields.
Slow Imports: Large files may take time to process. Consider breaking them into smaller files.
Contacts Not Triggering Automations: Ensure the correct lists, tags, or fields are associated with the automation triggers.
Importing contacts into ActiveCampaign is a crucial step for effective email marketing and automation. By following the steps outlined in this guide—whether using the import tool or the API—you can efficiently manage your contacts and streamline your marketing efforts.
Need help? Check out ActiveCampaign’s support page or contact their customer support for assistance.
Happy importing!
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