In today's digital age, writing letters and mailing checks is quickly becoming a thing of the past. While sending Christmas cards has an understandable personal touch that e-cards don't, there's really no reason to still be mailing a personal check to the power company each month. If you're still writing checks and licking envelopes, it's time to go paperless. Not only will you save money and trips to the post office, you'll also be doing something good for the planet. Plus, postage rates are constantly going up — and they're about to increase again.