How to Check the Security of your Gmail Emails

Posted in: Gmail Customer Service On: 04/13/18 3:35 AM by: Tom Copper

Whenever it gets possible, Gmail always protects your information by applying automatic encryption to your emails, which turns them into a code during delivery. This security tool by Google is commonly called as Transport Layer Security (TLS) and helps to prevent others from reading your emails secretly.

Gmail tech support number

Check messages

If you’re on a computer or an Android device or tablet, emails that aren’t protected by this security layer will show No TLS message icon. This icon looks like an open red lock which indicates that someone else might be able to read the email and your emails aren’t secure anymore.

Messages you’re sending

  1. Sign in to Gmail on your computer.
  2. Click Compose In the top left corner.
  3. In the “To,” “Cc,” or “Bcc” field option, start entering your recipient’s email address.
  4. At the right of the recipient’s email address, look for No TLS

If you see that icon, it means the message might not be protected by encryption layer. If so, don’t send any confidential documents, like tax forms or contracts, to that address.

Messages you’ve received

  1. Again sign in to Gmail on your computer.
  2. Open any message.
  3. Under the sender’s name, look for No TLS message.

If you don’t see that icon, an indication is that the message might not be protected by encryption layer.

Why some emails might not be encrypted

For this security tool to work efficiently, the email providers of both the sender and the recipient side must have to use TLS. Know more about Gmail TLS feature and its implementation at Gmail tech support number 800-674-2913.


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