this may or may-not work depending on when your iphone last backed up; its supposed to back up before each sync, but it doesn't always do it
in itunes:
edit > preferences > sync
should show you the latest backup file created BEFORE you last sync'ed and also when this file was created. Most important thing is if you synced and deleted everything, that you don't try to sync again as this could overwrite the back-up file with one of your semi-empty phone!
assuming the last back-up wasn't 12 months ago, and that you haven't tried syncing 2 or 3 times since you wiped your emails and contacts, then you can restore the phone and update it again from the backup file
there should be a how to on the internet somewhere, i've not done this on a pc, so it might be different and you don't want some 1/2 baked, 1/2 cut, hung over mac user guessing for you!..
for the future, in itunes you can set something to alert you if over a certain percentage of contacts, calendar events, etc., will be modified through the sync you're doing.. while its a continuing PITA for me everytime it pop's up, it does add a little bit of a fail safe..
also there is a setting in the sync options which allows you to choose whether you sync the phone with pc, the pc with phone, or sync both together so you get everything from both devices in both locations.. thats probably not the best description ever but hopefully you get what i mean.. if you use the third option its a bit safer
b
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