Apple's iMessage, a communications platform that comes with Mac and iOS products, is another option if you want to secure and protect your digital communications.
Messages are encrypted on your devices via a private key and cannot be accessed without a passcode. However, if you choose to back up your data to iCloud, a copy of the key protecting these conversations is also stored.
In order to keep your messages truly private, turn off the backup option. Apple will then generate an on-device key to protect your messages and this is not stored by the company.
In addition, only conversations taking place between iPhones -- rather than an iPhone and Android device, for example -- are encrypted. 2FA must be implemented to use end-to-end encryption.
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