How to upload and floss a spreadsheet



Step 1. Click Upload in the sidebar. In the Upload a CSV or Excel file card, click Upload CSV or Excel file.



Step 2. The Bulk CSV or Excel upload page opens. It supports .csv, .tsv, .xlsx, .xls, .xlsb, .xlsm and .ods files (first sheet only for spreadsheets). mailfloss treats the first row as the headers row and skips it. To speed things up, keep a single column of emails and remove other data.



Step 3. Drag and drop your file into the upload area, or click Upload CSV or Excel file and choose the file from your computer.





This is an example of how your spreadsheet file may look. Notice the Email column with the addresses listed on it.

Note: for security and privacy reasons, we don't keep any data from your uploaded spreadsheet, and we process nothing else other than the email addresses in it. The report file you'll get from this process will only contain the email addresses and the respective results for them, after this you can merge this information with your original file. If you need more information about the merging process, please check our merging spreadsheets guide.









Step 4. Check that Email column header shows the column with your email addresses. If it doesn't, choose the right one from Switch column. The Preview shows the first few addresses. Then click Confirm email column.

Step 5. In the Confirm email addresses column and permissions dialog, tick the box to confirm that you have permission to email these addresses and that the column is correct. Then click Yes, I'm sure.

Step 6. A flossing session starts automatically. When it's finished, go to your Dashboard to see your results.

Happy flossing!