Follow the steps to migrate Yahoo emails to another account; Step 1. Run Advik Yahoo Migrator and enter your login credentials. Step 2. Select mailbox folders and click Next button. Step 3. Choose Email Service Provider from the list. Step 4. Enter its login credentials to migrate mails. Step 5. Apply email filters if required and click Convert. Finished! This is how you can migarte or transfer Yahoo emails to any other email services.