To keep your Клиенты.xls file clean, you should prevent typing errors before they happen.
Once your list grows, you'll need better ways to analyze and navigate the data. Kлиeнты.xls
: Highlight your client name or email column, go to Conditional Formatting > Highlight Cells Rules > Duplicate Values . This will immediately flag if you accidentally add the same client twice. To keep your Клиенты