Common problems when importing CSV files and how to fix them.
File not uploading
Make sure the file is in .csv format (not .xlsx or .xls).
Check that the file size is within limits.
Try saving the file with UTF-8 encoding if you see garbled characters.
Columns not mapping correctly
Ensure your first row contains column headers.
Use standard names like "First Name", "Last Name", "Email", "Company", "LinkedIn URL" for best auto-detection.
You can always manually adjust the column mapping in the import wizard.
Missing data after import
Check that your CSV does not have empty rows or inconsistent formatting.
If columns appear empty, verify the data is not shifted (wrong delimiter).
Cleanlist uses comma as the default delimiter. If your file uses semicolons or tabs, try converting it first.
Duplicate leads
Cleanlist will flag duplicate leads within the same list based on LinkedIn URL or email address. You can choose to skip or overwrite duplicates during import.