Use Secure Settings for this PDF. Send and open confidential emails — PC — Gmail Help How to encrypt a PDF file for email — PC — Windows Help Use Adobe Acrobat Reader. · Open Adobe Acrobat Reader. · Click File, Preferences > Save File As. · Select Choose a file and click Open. How to protect your email in Gmail What's a private email account? In Gmail, everyone uses your own private email address, instead of using an “inbox” address, like you might get at a work or school e-mail address. This means that nobody can just look up your email and read your messages. How to keep your messages safe — Android — Gmail Help Turn on secure settings in Gmail. · Tap the gear in the upper right. · Settings > Accounts. Check the box labeled, “Protect your password and account information from unauthorized access. Use a Gmail password manager You might want to make a list of your passwords so that you can remember them, to make them easy to change or add new passwords whenever you need to. This way, if your account gets compromised, your passwords are safe. How to securely store your passwords Open your Android phone's Settings. · Tap Accounts, then turn on Account Security. · Use a secure password manager to keep your passwords safe. How to easily set up secure password manager The best password managers are cloud-based.