You can use the
CloudMigration Yahoo Mail Backup Tool can make your transfer experience painless. This is an automated tool that is made to handle this type of process. It also has a great GUI that provides an easy and engaging user interface. You can also give it a try with the demo version, which is free.
Here are the steps to
Migrate Yahoo Mail to Office 365
1. Download and run the Yahoo Backup Tool on your machine.
2. Enter your Yahoo email details and hit Login.
3. Now choose from the folders available in the tree > Next.
4. Select the email client as Office 365 and hit Next.
5. Now select the destination mailbox of Office 365 and provide your credentials to access Office 365.
6. After that, you can select which required filter.
7. Finally, hit Convert to begin the process.
These are the steps to transfer from Yahoo email to Outlook 365. In addition to a smooth transition, this tool has many other great features that will allow you to convert your Yahoo Mail data into different file formats like PST, MBOX, EML, EMLX, MSG, PDF, CSV, etc. Additionally, it has a great feature that allows you to free up server space once your Yahoo backup is complete, by deleting items in your mailbox. It can also migrate emails from a Yahoo account to another account with email attachments.