To keep emails relatively safe google uses TLS which is called as standard encryption .but it’s only available for business and educational institutions The service does also have the more secure S/MIME encryption and other ways there are you can maintain it.
your personal data is a little more safer by using google confidential mode. In 2018 google introduced its confidential mode for Gmail from copying contents that can expire and prevent recipients.
downloading and forwarding them to others. you can see the confidential mode on both desktop and mobile through whichever you use, you’ll need to activate confidential mode each time you send a message.
Here are key points on how to do it :
Compose a new message, Look for the icon of a locked clock to the right of the Send button
find among all the other icons, but keep and tap it how long you’d like recipients to have access to your message before it expires pop-up will appear that allows you to set the parameters going up to five years starting at one day.
Require Passcode category Below the expiration date, you’ll see. if the person you are emailing has Gmail and you’d like an extra layer of security,
select SMS passcode to also require them to input a passcode that will be texted to their phone number. select no SMS passcode if the receiver doesn’t have Gmail.
via email, they sent a passcode. Across the bottom of the message is A notification that the message is being sent in confidential mode. but some of the items are located in different places than you’ll find in your browser these steps are largely the same .for both ios and android systems the process is the same. Compose a message.
Tap the three vertical dots in the upper right corner of the app, then tap Confidential bottom a message sent in confidential mode will display a small window across the bottom once you adjusted the settings how long the message will exist before expiring.