To solve this problem, we recommend that you use the “Import” function of Gmail or “Synchronize” of Outlook. Here we explain how to do it.
Import emails into Gmail
2- Select the option: Check email from other accounts> Add an email account
3- Enter the email account you want to import
4- Select import via POP3
- The username is the full email account
- The connection must be SSL
- The port must be 995