Unity and iOS lower than 7.

Hi, Unity has iOS 7 as the lowest it can go.
I've made an app for a non profit and it only requires Location services and then to send an email by using the native email client of the phone.
It works fine btw, but i have it as requiring iOS8.
Wanting to grab as many devices as possible, will it work if i set the setting in Unity as "unknown" and then in Xcode set it to 6?