If you are looking for a solution to migrate from Yahoo mail to Office 365 then try Advik Yahoo Backup Tool on your system. The software can export Yahoo emails to Office 365 account in one click. It also provides various advanced filter options to migrate selected emails based on Date Range, To, From, etc.
Steps to Transfer Yahoo Mail to Office 365
1. Run the software on your system.
2. Enter login details of Yahoo Mail account to sign in.
3. Choose required mailbox folders.
4. Select Office 365 as a saving option.
5. Enter Office 365 account email address and click on Backup button.
6. Type password of Office 365 account and press Sign in to begin the process.
Done! That's how you can easily migrate emails from Yahoo to Office 365.