You can only access Yahoo mail by entering the correct account credentials. Smoothly access the services on platforms like Windows, Android, and iOS. Sometimes when you use the services, you might face issues using Yahoo mail. One of the common issues can’t sync my Yahoo mailon iOS, Android, or Windows. If you encounter the problem, you can’t see old emails. The possible reasons for the issue are the old Yahoo version, the old operating system, and cookies and cache memory.