Email messages that are digitally signed or encrypted can offer enhanced security when sending or receiving email.
How do I encrypt an email already sent?
On the File tab, click Options > Trust Center > Trust Center Settings. On the E-mail Security tab, under Encrypted e-mail, select the Encrypt contents and attachments for outgoing messages check box.
How do I encrypt a file in Mac Mail?
- In the Mail app on your Mac, choose File > New Message.
- Move the pointer over the From field, click the pop-up menu that appears, then choose the account for which you have a personal certificate in your keychain. ...
- Address the message to recipients.
How do I encrypt an email in Outlook for Mac?
- Press the New Email button.
- Press the Options button.
- Press the Encrypt button, then press the Message button to get back to the window that allows you to send the email.
How do I password protect an attachment in Mac Mail?
Choose File > Export as PDF, click the Show Details button, then select Encrypt. You can also enter a new name for the PDF if you want to create a password-protected copy and keep the original PDF unencrypted. Type a password, then retype it to verify the password. Click Save.
How do I put a password on an email attachment?
Click the File tab. Click Info. Click Protect Document, and then click Encrypt with Password. In the Encrypt Document box, type a password, and then click OK.
How do I password protect a PDF on a Macbook?
Encrypting a PDF with a password on your Mac Here's how it works: Double-click on your PDF doc to open in the Preview app. Click File > Save. Check the encrypt box > enter your password > click save.