If the recipient has their own digital certificate, decryption occurs automatically.
If the recipient is already part of the zertmail. or SEPPmail technology network (currently over 10,000 domains, including many public institutions, particularly in the healthcare sector), encryption and decryption also occurs automatically.
Without a recipient certificate, encrypted emails and attachments can be decrypted and read via the web portal integrated into zertmail. or, for Apple iPhone users, via the Viewer by SEPPmail app on their mobile phone by entering the password provided by the sender.