This is interesting. The company being sued, Zumbox, doesn’t seem to be a traditional digital mailroom provider in the way we think of it. Rather, they seem to have some sort of on-line network that ingests files before they are printed and then delivers them digitally to their addressee. We’re not exactly sure how this works, as it’s not really described on the Web site, so we’ve pinged them for more info. To us, it sounds like some kind of general mail version of OB10’s e-invoicing network. PBI is suing Zumbox over some patents related to electronic delivery of messages. We’re assume this doesn’t apply to traditional digital mailroom environments, (or PBI would have sued Earth Class Mail, right?), but we really don’t know.