1. Check your email software settings to verify that the emails are being marked as read automatically.
2. Consider if your email software has a setting to automatically mark emails as read after a certain amount of time.
3. Check any filtering or rules options that might mark incoming emails as read.
4. Check the options for enabling push notifications for incoming emails and make sure they are turned off.
5. Ensure that email clients such as Apple Mail and Outlook have rules configured that are not marking emails as read.
6. Make sure all of your devices are synced properly with the same settings.
7. Check if there are any other devices accessing your email account that might be automatically marking emails as read.
8. If the issue is still not resolved, contact your email provider to find out more.