Lists
Prepare a CSV or text list
Keep source rows intact and choose the right email column.
Prepare the file
Use UTF-8 CSV or TXT, up to 8 MiB and 100,000 data rows. Save spreadsheet files as CSV before uploading.
If your CSV has column names, select “The first row names the columns.” Other columns stay attached to their original source row.
- Put addresses in one column.
- Inspect the full-file preview and choose that column.
- Review unreadable and repeated rows before starting a run.
Repeated addresses
A repeated address shares one verification result across its source rows. Repeated rows do not create extra sample or run charges.