I think I know why estamp has made this offer. I am not a techie so bear with me. I have been using estamp for about 1 year now. The original software had MANY problems with printers using bidirectional software. The "Vault: did not allow the bidirectional software to work. OK, I installed another printer port. Worked perfectly. They sent me the new software upgrade, i never installed it since everything worked, then I had problems. So I installed the new software and have not been able to print a stamp since. After calling CS they said the new software will not work on LPT 2. OK, I changed everything back to LPT1, still no stamps will print. Called again and it is an issue with my Officejet software.
So my guess is they "Know" this printer is compatible with their software.
I have used PCStamp, Stamps.com, Clickstamp and had a postage meter. I like Estamp the best. Once it is setup and running properly it is fast, and the address book is a nice feature.
Linda - kovalchikfarms.com