This special mode will give you an option to send an email with a pre-selected expiration date for messages. Further, the options forward, copy, print, and download will remain disabled for the person you are sending the email to.
If you want to try your hands on this feature of Gmail, then this is what you need to do:
Send confidential emails on desktop
In the bottom right of the window, click on the ‘clock-lock’ icon to turn on confidential mode
Set an expiration date and passcode
– If you choose “No SMS passcode,” recipients using the Gmail app will be able to open it directly. Recipients who don’t use Gmail will get emailed a passcode.
– If you choose “SMS passcode,” recipients will get a passcode by text message. Make sure you enter the recipient’s phone number, not your own.
Send confidential emails on mobile
In the top right, tap More and head to Confidential mode
Turn on Confidential mode
Set an expiration date, passcode and other controls
Readers must note that even though the recipient will not the option to forward, copy, print, and download contents of the email, however, it doesn’t prevent recipients from taking screenshots or photos of your messages or attachments.