If you have an email where you want your users to contact you with any and all questions, a true concierge/high-touch point of contact, what would you call it?
I'd probably just call it email@example.com. It's clear and obvious.
I wouldn't worry about anything sneakier because the reputation and impression for a true concierge/high-touch point of contact will not come from the email address. It will come from:
- how the contact is framed on the site
- customers' previous experience of customer support
- the reputation of the company for customer support.
To pick an example - rackspace has a fantastic reputation in the dev community for fanatically good support. Look at their support page. http://www.rackspace.com/support/ what it does is make it really easy to get support. It shows individuals in the banner to emphasise that you're getting humans not an inbox. They're emphasising the more personal and immediate contact methods over the less-immediate / less-expensive ones. Phone calls first. Then live chat. Then links to direct support help. You go to pages that users might visit with problems (e.g. their status page http://status.apps.rackspace.com/) and you see those sorts of links again.
Forget about the email address. Make it simple and understandable and useful. Place it in a context where the design is demonstrating to the users that support is valued and done well. And make sure that the support actually is valued and done well.
That last one is the most important.