Here your use usage for encryption is important and would have to be described to us. The encryption, the exchange of the encryption certificate with the intended recipient and the decryption at the recipient contains several, not that simple steps. These lead to increased support requests and therefore this function can only be used with a license file, which requires a contract with us. Often the encryption can be achieved more easily e.g. in the e-mail client with an S/MIME certificate, which can be purchased from Allgeier or other providers.