Using Guard

Encrypting E-Mail Conversations

3.2.2. Sending encrypted E-Mails

The following options exist:

  • Sending an encrypted E-Mail. Only you and the recipients can read the E-Mail content.

    Warning: When sending an encrypted E-Mail draft, the draft will be deleted when being sent from the Drafts folder.

  • Sending an E-Mail with a signature. The signature ensures that the recipient is able to recognize whether the E-Mail content has been changed on the transport.

  • Sending an encrypted E-Mail with a signature.

How to send an encrypted E-Mail:

  1. Compose an E-Mail in the E-Mail app as usual.

    In the Compose page, click the Encrypt icon on the upper right side.

    You can also click on Security below the subject. Enable Encrypt.

    Icons next to the recipients indicate whether the message can be encrypted for this recipient. If hovering over an icon, a description will be displayed.

  2. In order to show further options, click on Security. You can activate the following options.

    • In order to additionally sign the E-Mail, enable Sign.

    • In case the recipient's E-Mail client does not support PGP, the message should be readable though, enable PGP Inline. If you use this setting, you can not send E-Mails in html format.

    • To enable The E-Mail recipient to send an encrypted reply, the recipient needs to have your public key. You can send your public key as attachment. To do so, enable Attach my key.

  3. Click on Send encrypted.

    When sending to external recipients, a window is displayed that allows to send notes for opening the encrypted E-Mail to the external recipients.

    When initially sending an encrypted E-Mail to an external recipient, the latter receives an E-Mail attachment with your public key.