Welcome :) Perhaps I'm being thick, but your posts make the situation extremely unclear to me. There seem to be many issues in a few short statements 
how to stop her constant texts re contact (when she doesn't get her own way) intruding into my personal life?
What do you mean by "intruding into your personal life"? Is she swamping you with texts while you're engaging with a new relationship? Do you think she's trying to stop you building a new love life? It's hard to see how anyone could text constantly about DC contact but perhaps you will clarify.
I appreciate that you feel your ex harasses you by text when she doesn't get her own way over contact - and I'd appreciate an idea of what 'constantly' represents - but it's not really uncommon for divorcing parents to argue about the details of contact. Does "when she doesn't get her own way" mean "when I don't get my own way"? That would, I'm afraid, be perfectly normal. How unreasonable is she being? What are your negotiation skills like; which of you is unwilling to compromise?
I am most confused by your statements about emails being used as evidence! Who exactly is scared of emails being used as evidence, and of what?? Please can you clarify?
I'm sorry there are so many questions here. You seem to be saying remarkably little in a very biased fashion ... I realise this happens when people are feeling threatened as well as when they're trying to avoid being straight, so hope you'll be able to explain a bit more. Hope your weekend's turning out okay.