https://www.apps4rent.com/faq-are-there-any-charges-for-using-mobile-devices.html
Charges or Cost for Mobile Device Access
There is no additional charge for activesync to mobile devices, if you have an Exchange mail account
mobile device accesschargescost
https://www.imprivata.com/company/press/imprivata-launches-mobile-device-access-secure-access-clinical-mobile-devices-apps
Imprivata Launches Mobile Device Access for Secure Access to Clinical Mobile Devices & Apps |...
mobile device accessimprivatalaunchessecureclinical