Importing
Data brought in from somewhere else goes to one of three places, depending on what it is: contacts to a Contact List, opt-outs to a Suppression List, and seed addresses to Seed Imports. All three take a CSV or Excel file with a header row and an email column.
Instructions
- Determine what data the user needs to import: Contacts (go to Contact Lists), Suppressions (go to Suppression Lists), or Seeds (go to Seed Imports).
- For contacts: navigate to Contact Lists > select or create a list > Browse to upload CSV/Excel file > map columns > Process File.
- For suppressions: navigate to Suppression Lists > select or create a list > choose format (Email, Pattern, MD5, Domain) > upload file > map columns > Process File.
- File requirements: CSV and Excel must have a header row. Email column is always required. Text files support one email per line.
- Review results: total records, processed count, duplicates handled automatically. Existing contact data is appended or updated.
- For large migrations, use the Contact API or Suppression API for programmatic bulk operations.
Related pages
- Contact Import Formats — covers Supported File Formats, Column Mapping, Import Behavior, File Size & Limits
- Contact Import Troubleshooting — covers Common Import Issues, Tips for Successful Imports