Gmail confidential mode controls how recipients access a message and its attachments. It can set an expiry date, let the sender remove access early, and disable common sharing controls. It does not guarantee that a person who has already seen the information cannot retain or disclose it.
Understand the access controls
A sender can choose an expiration date and, where supported, require a passcode delivered by SMS. Recipients can view the protected message only while access remains available. Gmail disables options to forward, copy, print, and download the protected message text and attachments.
These controls can reduce accidental redistribution through the mail interface. They do not make an ordinary recipient trustworthy or determine whether your organization permits sending the information. Verify the address and the intended disclosure before choosing the mode.
Recognize what remains possible
Google explicitly warns that recipients can take screenshots or photographs. A malicious recipient using other software may still copy or download content. Expiry or early removal therefore cannot promise recovery of information someone has already captured.
Do not describe confidential mode as a universal recall tool. It also does not erase independent notes, photographs, or copies outside the controlled view. If a disclosure was unauthorized, follow the applicable incident procedure instead of assuming that removing access resolves the event.
Keep access restrictions separate from encryption
Confidential mode is a different feature from transport encryption, hosted S/MIME, and Gmail client-side encryption. TLS concerns protection during transfer; S/MIME and client-side encryption have separate account, key, and recipient requirements.
Google lists confidential mode among the features unavailable when Gmail’s additional client-side encryption is turned on. Do not promise that selecting confidential mode enables that encryption or combines the two protections.
Choose a sharing route based on the actual sensitivity, recipient, and policy requirements. For regulated material, ask your administrator which approved service and retention rules apply. Confidential mode can provide useful access limits, but those limits should be described accurately to both the sender and recipient before the message is sent.
Browse Gmail & Google Account help
References
- Send & open confidential emails
- Learn how Gmail encrypts your emails
- Learn about Gmail Client-side encryption
Reviewed against the linked official and developer guidance on October 27, 2026. Available options and screen labels can vary by account, device, region, and organization policy.