Izecom has developed a version of their S/MIME based email encryption software for emails received on a BlackBerry handset. The IZEMAIL reader allows for automatic decryption of messages on the BlackBerry handset itself. Depending on the server environment, the sender will also need to either use Izemail for encryption or make a small alteration in their mail server configuration to allow them to send encrypted emails to BlackBerry users. Compliance regulations may also require that corporations encrypt their email messages to keep their information confidential.”]
Source: https://www.darkreading.com/attacks-breaches/izecom-debuts-blackberry-reader