1. Select the Contacts icon in the upper-right corner of Yahoo Mail. It is located to the left of the Settings, Calendar, and Notepad icons.
2. Select the checkbox above the contacts list to select all contacts. You can also select or deselect contacts individually.
3. Select the Actions drop-down menu.
4. Select Export.
5.Select Yahoo CSV for a generic .csv file. There are also options for specific email providers, but the CSV format is the most universal.
6. Select Export Now to begin the download.
Yahoo Mail saves the contacts to the default download folder in a file named yahoo_contacts.csv.
by Pim Rongkasuwan on October 19, 2021