Jack Wallen/ZDNETCertain communications I send require extra security, also known as encryption, which most Android email clients cannot deliver. Encryption ensures the emails I send to specific recipients can only be read by those with a matching key to decrypt the contents of the email.You’ll need a third-party app for this level of security on Android. For encryption in email, you’ll require a different email client, as Gmail won’t cut it. I prefer Thunderbird on Android because it’s an outstanding email client, works with PGP (Pretty Good Privacy), and is an open-source application.Also: The Thunderbird email client finally landed on Android, and it was worth the waitThe app I chose for encryption on Android is OpenKeychain. This tool makes it easy to add encryption to Android.Let me show you how it works.Installing OpenKeychainWhat you’ll need: The only thing you’ll need is an Android device (phone or tablet) and a valid Google account. That’s it. Let’s make some encryption magic. More