If you’re importing a list into Klaviyo, proper formatting is very important. I wanted to share some of the most common issues with importing lists and some troubleshooting tips on how to fix them. Check that:
- Your file is a .csv (comma-separated values) file.
- If you’re in Europe, your spreadsheet software may export .csv files using semi-colons “;” not commas “,”. You can change this by going to your devices regional settings > advanced settings and changed the symbol used to separate lists.
- The first row contains column headers
- The email column header is properly named
- Name the column either “Email” or “Email Address”
- You do not have duplicate headers (this includes blank headers!)
- If you are receiving an error message about duplicate headers in your sheet and you double-checked that all your columns have unique names, delete any blank columns from your sheet and try uploading again.
- The file size is 50 MB or fewer
- Every row has an email address associated with it
- No duplicate email addresses
- All email addresses are formatted properly (ex: firstname.lastname@example.org)
For more details and troubleshooting help, check out our article on How to Troubleshoot List Imports. And if you’re still having trouble, post below and let our community help!