OK so I installed Go contacts. Turned the phone off and then on again.
I then got a choice of using Go contacts or the Contacts that came with the phone. I selected Go contacts and I was then able to do a group email through G mail.
However, since then I seem to have lost that setting and has returned to the original one.
I have tried turing the phone off and on again but don't get the choice anymore.
Is there anyway I can change the settings permanently to always select to Go contacts?