But you are definitely not thinking through. Do you honestly think *ANY* provider will listen to you if you have an issue that they don't want to address? Get over yourself. Until you flash the cash and have a fully paid enterprise license/subscription for *ANYTHING* you are a small fish.
The Apps and e-mail aren't part of you direct payment scheme, just tools to help you get there.
If you want to make it hard, fine do that, but then stop asking paranoia induced questions about it.
I gave you a solution using a very reliable service, that IMO, offers much more than *ANY* other mail hosting provider... and allows you to do anything you want for basically scratch for cost.
The only thing *YOU* have to get past... is your over arching repulsion to using Google.
Trust me when I say this:
When I was first being told I had to use this service and completely rely on Google to "be a good company and do no evil"... I was extremely skeptical. In fact, I thrashed on it for weeks. Finally, the CEO told me to shut up and ignore your personal alarms going off for a few weeks. Then if you still have issues, we can discuss it. I did that and most of my uncomfortableness has gone.
All in all, *I STILL* hate the way Google Docs works in most instances, as its hard to get the spreadsheet stuff to work the way *I* want them to. But in general, the entire experience has been very up and down, but in the complete arena of what we do, (SaaS), its very... nice to not have to run around to the 50 different locations for info... for anything you want to do its just plain good enough.
I'm not saying you have to switch, but come on, let us be real here, you HONESTLY believe that Google will be a Microsoft in the long run? Sure there will always be the Vocal minority against Google (include Microsoft in that vocal group) and Google faux-pas will happen regularly. Google takes its services *VERY* seriously, as compared to Microsoft... (refer you to your XML parser issue). Google's support has been more than usable and has actually helped things get fixed. They are plain and short sometimes, but it gets the job done and without fluff. We have had about 40 tickets open with them so far and all have either been fixed or explained.
But the Vocal Minority for Microsoft has *ALWAYS* been much larger and been poo-pooed away by them and nobody has taken them to task as they *DO NOT* respond in normal ways.
When has Google *REALLY* been evil? Sure they have some draconian rules on ads and TOS, but that is because of people gaming the system. They have also said ... oops on some operation issues. So, ho often does the Bank you work for... change the email system out from under itself? Or release new features or improve distributed content delivery or release new products all while still being live?
I don't care to use Google for everything, but since I am for nearly everything work related, its... been fairly easy and is a known quantity. Stop complaining about your fear of reliance on a single point of service. You can still save everything locally and archive it local. But... to be honest, you are swatting at imaginary flies.
I don't know what to tell you.