How to send a password-protected email

Question

I need to share sensitive information via email and want to protect it with a password. I’ve heard about encryption tools and password-protected attachments, but I’m not sure which is the best method to ensure the email’s security. Can someone guide me on how to set this up?

Answer 1

Sending a password-protected email is a great way to secure sensitive information. Here are some secure methods to do it effectively:

1. Use Password-Protected Attachments

• Encrypt Files Before Sending:
  • Use software like 7-Zip, WinRAR, or macOS Finder to create a password-protected ZIP or RAR file.
  • Example with 7-Zip:
    1. Compress the file into a .zip or .7z archive.
    2. Set a strong password during the compression process.
  • Share the password separately (via phone, SMS, or another secure method).

2. Use Built-in Email Encryption Options

• Many email providers like Gmail or Outlook offer built-in encryption tools:
  • Gmail (with Confidential Mode):
    1. Compose an email.
    2. Click the lock icon at the bottom of the compose window.
    3. Set an expiration date and enable a passcode.
    4. Gmail sends the recipient a passcode via SMS.
  • Outlook:
    1. Compose an email.
    2. Click "Options" > "Encrypt" and select encryption settings.
    3. Add the recipient and send the email.

3. Use Secure Email Services

• Switch to secure email providers like ProtonMail or Tutanota, which offer end-to-end encryption:
  1. Compose your email within the service.
  2. Use the option to send a password-protected message if the recipient is not on the same platform.
  3. The recipient gets a link to access the email and must enter the shared password.

4. Use Encryption Tools

• PGP Encryption (Pretty Good Privacy):
  • For advanced users, tools like GPG4Win (Windows) or GPG Suite (macOS) can encrypt email content.
  • Both sender and recipient need to exchange public keys beforehand.

5. Online Tools for Secure Sharing

• Services like OneDrive, Google Drive, or Dropbox allow sharing password-protected links:
  1. Upload the file to the cloud service.
  2. Set a password or restricted access link.
  3. Share the link and password separately. 
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