If your table contains rows with either first names, full names or email addresses, this add-on will determine the corresponding gender and will insert it in a column of your choice.

You can select and query up to 10,000 cells at once. 

Optionally, pick a country column to localize your query. For example: While "Andrea" is a female in Germany, "Andrea" is a male in Italy.  If you don't have a country column, you can skip this step.