Product guides
Import contacts from CSV
Map columns, handle duplicates, and land people on the right list.
Prepare the file
- Export CSV/UTF-8 from your CRM or sheet.
- Required column: email. Recommended: first name, last name, tags.
- Remove obvious invalids (
test@, role accounts you shouldn’t mail) before upload.
Run the import
- Select the client workspace.
- Contacts → Import.
- Upload the file and map columns to EonMailer fields.
- Choose a destination list (recommended) and duplicate strategy (skip / update).
- Confirm — watch progress until complete.
After import
- Spot-check 3–5 contacts for field mapping.
- Build a segment if you need a subset.
- Never send the full list on day one for a new domain — warmup.
Warning Importing purchased lists violates most provider Acceptable Use Policies and will tank deliverability. Use permission-based data only.