Credit: SFIO CRACHO/Shutterstock For quick and easy communication, instant messaging is more convenient than email and more secure than SMS text messaging – at least, if you have the right app. A secure messaging application lets you safely exchange private information with employees, clients and co-workers without compromising your data.

What does it mean for messaging to be secure? Usually, it means that your messages are encrypted before they leave your device. Encrypted messages can't be read by anyone other than the intended recipient, even if they're intercepted during the exchange. Some apps offer self-destruct functionality, letting you send messages that are automatically deleted after they're read. Another common feature is an anti-screenshot interface, which doesn't show the message and the sender's name on the same screen.

It can also notify you if the app detects that a screenshot of the message has been taken. No messaging app is totally foolproof, but business users with privacy concerns would be wise to check out these five secure messengers, all of which are available for Android and Apple phones. Pryvate Now is an encrypted communication service with several offerings, including its free messaging app that allows you to make unlimited encrypted texts, voice calls and image sharing, all with self-destruct features and screenshot notifications. There's a Pro version that caters to business and collaboration uses, which includes secure video calls and file sharing. It includes admin tools for multiple-user management and video conferencing with multiple team members.

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There's also an encrypted file storage feature that allows you to store encrypted files locally, but the keys to unlock them are stored elsewhere, so if your device is ever stolen, then your files can't be opened. Pryvate's Enterprise version includes corporate landline encryption for your business, protecting your phone calls through a specialized landline as well as a secure IP line for private internet browsing. The Pro version is $5.62 per month, per user, while the Enterprise version is $13.99 per month.