If you are planning to switch from Yahoo to Office 365 then you might need some guidance to securely transfer your mailbox from Yahoo to Office 365 account. I would like to suggest you to try the straight forward and most adopted way for Yahoo to Office 365 migration. 

Check out Yahoo Mail Migration Tool, this software is specially designed to transfer emails from Yahoo to Office 365, Zoho Mail, Gmail, G Suite and many more cloud server accounts.

Steps to export Yahoo emails to Office 365 account are as follows;

1. Run Yahoo Mail Migration tool in your machine.

2. Enter Ymail login credentials and click Next.

3. Select mailbox folders and click Next

4. Select Office 365 as saving option from the list.

5. Enter your Office 365 login details and click Convert.

Done! This is how you can export Yahoo emails to Office 365 account effortlessly.

Download link :  https://www.yahoomailmigration.com/dl/yahoomail-migration-tool.exe