To disable or enable the automatic marking of emails as read upon opening, follow these steps:
- Navigate to Settings.
- Select Account Settings.
- Choose your specific account.
- Go to the Advanced section.
- Here, you can enable or disable the option "Mark as read when opened".
Alternatively, you can follow this path:
- Menu (represented by three dots) | Accounts | Select your account | Advanced Account Settings | Enable/Disable "Mark as read when opened".