To Setup automatic forwarding of email notifications from Secure-Mail™ you will need to set up filtering within the email provider or client. Secure-Mail’s notification email is firstname.lastname@example.org. Any emails from this address would need to be forwarded to the desired email address. The process for setting this varies depending on the provider.
To set up automatic forwarding with Google: https://support.google.com/mail/answer/10957?hl=en
To set up automatic forwarding with Yahoo - https://help.yahoo.com/kb/mail/SLN3525.html
To set up automatic forwarding with Outlook - https://support.office.com/en-ca/article/Automatically-forward-my-messages-to-another-e-mail-account-9f124e4a-749e-4288-a266-2d009686b403
Note that forwarding the notification of a Secure-Mail message does not transfer access to that message. The recipient of the forwarded notification will still need to log into the appropriate Secure-Mail account to access the Secure-Mail message.