How to Send Mass Emails from Excel using Mail Merge Aug 03, 2021 · Note – If your contact data is in a CSV file, you can also import it into Google Sheets. Here’s a LinkedIn learning tutorial on how to import a CSV file into Google Sheets. Here’s a step-by-step guide on how to import your Excel sheet into Google Sheets: Open Google Sheets. Click on the folder icon in the bottom-right to open the file picker.