You can also send encrypted emails to external recipients who are no groupware users. When adding an external recipient, Guard checks whether a public key is available for this email address. Depending on the result, Guard uses different procedures for sending the encrypted email:
If there is a public key for the recipient:
The message will be sent encrypted using this key. The recipient can read the message with his/her private key.
If there is no public key for the recipient:
If the external user already has a guest account, he/she will receive an email with the link to the login page of his/her guest account. When having logged in, he/she can read the encrypted email on the guest page. He/she can send an encrypted reply from this page.
If there is no guest account, a guest account will be created. The external recipient will receive an email with a link to a guest page and an automatically created password. The user logs in to the guest page. Then he/she can create an own password.
Depending on the configuration, the automatically created password and the link to the guest page will be sent in separate emails.
Depending on the configuration, guest account emails will be deleted from the server after a specific number of days.
The external recipient can send an encrypted reply to the encrypted email. It is not possible to add additional recipients though.
Parent topic: Encrypting Email Conversations