Stamps.com Complaint - Stamps.com dupes with exorbitant service fee; no information on signup
The registration process is misleading; they do not tell you about the $15.99 monthly service charge at the end of trial. No email confirmation on the charge either - you'll realize it only when you see the charge on your credit card. The email does mention the ostensible free $5 worth postage to get you started though. The email would probably be weeded out by spam filters of most email programs, so you won't always see it and there's no way you know you have registered! There's no way the customer service personnel would reverse the charge even when you mention you never intended to purchase anything from them. They'll try to lure you with courtesy postage credits that you don't have a need for or monthly fee waivers that will keep you in the system, and if you are not careful enough to call and cancel the account, potentially be duped again. And worse, they need you to print postage on their rolls and sheets, which they purportedly mailed to you!! And somehow, they imagine that you can print postage directly on your envelopes/packages even when you don't have any to mail. I think they are trying to give Ponzi a run for his money!
To add to your woes, the website is perpetually down with "limited functionality", which only allows you to change your password! so in effect, you'll be billed a steep $15.99 per month for a service that you were never able to access!
In a nutshell, it is not a product worth anything for individuals. USPS' online service is far more efficient, and all they ask for is a shipping/handling of $1.