Currently there is no way to change your email address. We plan to offer that functionality in the next release of our product. (Due very soon.) In the meantime, you can register for a second account by logging out of Zosh and then registering with the email address you’d like to use. You can follow these steps to logout of Zosh and then register for a new account: (See this video for help disabling the auto-login feature.)
1. Go to the iPhone home screen and choose the “Settings” icon.
2. Scroll down to the bottom and select the “Zosh” settings.
3. De-select the “Auto-login” feature and erase your username and password if they are filled in.
4. Go back into the Zosh application. You should be able to register for a new account by selecting the “register” option.