First, start your computer and open your browser to Yahoo.com. Then you have to select the Mail icon present on the left side menu of the webpage. You will be redirected to the Yahoo! Mail page’s home where you will be required to log in to your account using the username and password you have.
Once you log in to your Yahoo! Account, then select Contacts from the options visible on the top of the page where your inbox is.
A new page will load. Now, you will have to click Actions which is present under the Contacts’ tab. From the drop down menu, select Export All.
The page will load and display a list of programs and then depending upon your requirement, select the program format where you wish to export your yahoo mail and then click ‘Export Now’. You will have a host of options to choose from as per your requirements.