If you have a long list of emails, you can evaluate whether these emails are even real or not, using the ISEMAIL function. Suppose we have a list of emails in cell range A2:A5 in a given spreadsheet.

How to edit a drop-down list in Google Sheets Your email has been sent A drop-down list helps speed entry and standardize data in a Google Sheet. Select a cell ...

To display a tooltip, you may use Comments, Notes, Data Validation Help Text, or Screen Tips. Let us see how they work in Excel and Google Sheets.