

If your purpose is to back up and encrypt your Mac Mail database, then the steps above can help. If your email account is logged in, one can easily view your emails in the opened Mail app. And opening the Mac Mail app will automatically create a new Mail folder in the Library folder. Someone thought that encrypting the Mail folder would prevent Mac Mail app from being opened. Now the Mail folder is an encrypted DMG file. Go to the Library folder and delete the Mail folder.Wait for Disk Utility to create a DMG file.Click the Image Format dropdown menu and choose read/write.Click the Encryption dropdown menu and choose 128-bit AES encryption (recommended).Select the Mail folder in the Library folder.From the menu bar, choose File > New Image > Image from Folder.You can use Disk Utility to encrypt the Mail folder on your computer.It’s possible to use Disk Utility to put a password on a third-part app on Mac.Some users on a MacRumors forum mentioned the possibility to password protect Mail on Mac with the help of Disk Utility, a pre-installed app to perform disk related tasks. If it’s enabled, AppCrypt will automatically open and start protecting Mail (and other apps) upon Mac startup. Enable the Launch at system startup option When turned on, the Auto Lock feature will automatically lock your unlocked Mail app after it is not active for a while, making the protection more effective. How to remove the password protection? Just select Mail under the Lock App tab and press the Delete key. If the password entered is wrong, Mail will remain protected, and AppCrypt will record the failed attempt, providing information like the time, date and a photo of the intruder. If the password entered is correct, Mail will be unlocked. When one tries to open it, the app won’t open, and a dialog box will show up asking for password. Now the Mail app on your Mac is protected with password.

In step 5, you can also select other apps that you want to lock.

Download Cisdem AppCrypt and install it.You can easily put a password on Apple Mail on Mac using Cisdem AppCrypt, the best app locker and website blocker for Mac. Help with privacy protection, productivity and parental controls.Let you lock apps and block sites permanently or during certain times.Also block access to websites and pages with password.Offer a feature to automatically lock unlocked apps after a period of inactivity.Record failed attempts to open your protected apps.Protect Mail and any other apps on Mac with password.Cisdem AppCrypt The Best App to Password Protect Mail App on Mac
