Here are some potential solutions to try when emails are marked as unread even though they have been read:
- Check your Trash folder; emails may be getting sent there instead of the inbox.
- Check a spam folder; emails may be getting sent there instead of the inbox.
- Unsubscribe from emails that you don’t open anyway.
- Make sure the inbox you are opening is the same inbox that you are sending emails from.
- Check the settings of the email server; emails may be set to be archived once opened.