Possible to delete "email" account that came on X2?

[Odyssey]

I set up all my gmail accounts using the "Email" client application that comes on the X2 instead of using gmail to set them up. I now want to get rid of the original email client so that I only use gmail to access my three gmail accounts.

If it cannot be removed, how can I uninstall the gmail accounts that I set up with it so that I can then set them up using gmail?

Have spent a lot of time on this, but can't figure out how to do it? Can anyone guide me? Thanks.