Who needs email certificates?

Basically, the use of email certificates is recommended if emails with confidential content are sent. Email certificates enable the sending of signed and crypted emails and attachments. Crypted emails ensure that the message and attachments can only be opened by the specified recipient. Digitally signed emails assure the recipient that the message and attachments really came from you. Digitally signed emails assure the recipient with a warning function that the message and attachments have not been changed after sending.