According to Meta, this feature is already available to users, but it may take some time for all Messenger accounts to be updated to end-to-end encryption by default.

Previously, Messenger had an option to enable end-to-end encryption, which allowed only the sender and the recipient to read messages. However, end-to-end encryption will now be enabled by default for all messages.

Meta stated that encryption can help protect users from hackers, fraudsters, and criminals.