Thank you guys. My company email security policy requires to use a 5 - digit pin every time to open the mail. And again as per that policy - the phone should be locked every 5 sec. ... In this case - can I use Touch ID instead of email's 5 digit pin ? From email client I expect to be able to support HTML/Rich text mail format , HTML signature, search in the global exchange server's address book, to search in the email contents on the server, and of course - to have a push notification as soon as a new item is received . And to be able to save the attachments locally or on the cloud. 🙂