Disclosed are systems and methods for use in filtering electronic messages
using business heuristics. In one aspect, a method includes determining
whether the electronic message is associated with a desirable business,
and adjusting the likelihood of delivering the electronic message to an
intended recipient of the message if the electronic message is determined
to be associated with the desirable business. In a more specific
embodiment, the method further includes assigning a spam-score to the
electronic message based on a likelihood that the electronic message is
not unwanted by the intended recipient, blocking delivery of the
electronic message to the intended recipient when the spam-score does not
cross an overall threshold, and delivering the electronic message to the
intended recipient based on the adjusted likelihood when the electronic
message is determined to be associated with the desirable business.