The Verge reports that Microsoft is testing Cortana within Outlook for Android and iOS. It will enable users to listen to and respond to emails using their voice. This is going to be very useful for listening to emails while driving as Microsoft is said to be testing Cortana integration within Outlook that will work over Bluetooth and read out email messages aloud. Cortana May Soon Arrive In Outlook For iOS And Android | Ubergizmo I feel Cortana may bot be a hugely popular feature in Outlook because some people don't like to learn new apps, or feel reading a few lines of text and typing a few words in an e-mail reply more convenient, and faster than using Cortana to use voice commands. I think iOS and Android already have text to speech, and speech to text keyboard features built-into the Operating system for people who are blind or partially blind. I hope there is a way to uninstall Cortana on Outlook since a lot of older phones with 8GB or less storage will have even less free storage space after installing Outlook because adding Cortana most likely increases the total file size of the Outlook app. I guest, more people will use the mobile web browser version of Outlook to check e-mail if they don't want Cortana to be installed on their phone.