I did something similar on a recent six-week international trip. I set up a dedicated "urgent" account ([email protected]) and put an autoresponder on my primary account telling people I was out of the country, with instructions to send their message to the urgent account if the message was indeed urgent. I checked my primary account a couple of times during the six weeks, and handled a couple of things that needed to be dealt with (e.g., the expiration of the UPS box where all my mail was being forwarded), but otherwise I restricted myself to the urgent account. When I got back, I went through my main inbox, but it only took an hour or so and I wasn't overwhelmed by the results.