or from the office:
using whatever is your favorite email program:
whether Microsoft Outlook, Eudora, QuickMail, GoldMine, etc.
or on the road with your palmtop:
Many airports now have free web terminals:
Many hotels have computers available:
Kinkos is open 24 hours a day in every major city
with fast internet connections available for about $10/hour:
You have so many options, so that one way or another, you can keep in touch.