Use Gmail’s built-in confidential mode for limited protection
Open Gmail and click Compose
Click the lock-and-clock icon to turn on Confidential mode
Set an expiration date and passcode option
Send the email
For stronger encryption, use a third-party email encryption tool or extension
Install a trusted encryption service that supports Gmail
Create or import the recipient’s public key if using PGP encryption
Encrypt the message before sending
Paste the encrypted content into the Gmail compose window
Send the email normally
Verify the recipient can decrypt the message with their private key or passcode
Use HTTPS to access Gmail and keep your account protected with strong security settings
Enable two-factor authentication on your Google account
Avoid sending highly sensitive information unless end-to-end encryption is set up