[chinathrow]

"There is nothing more effective than a well directed email stating that 1) you can solve one of their problems and 2) are you willing to purchase it today?"

That is considered illegal spam in lots of european countries unless you have a pre-existing relation ship with the recipients. YMMV.

[Silhouette]

Unfortunately, many of those laws only apply in B2C contexts, not B2B.

That doesn't make the time dealing with it any less of a waste or make spamming any more ethical or socially acceptable just because it's a professional contact, of course.