[greggyb]

The answer to any sales calls that won't stop (I found this out by happenstance):

"We're a consultancy selling services for these tools/products."

or

"We're a competitor, and I registered for your free trial for competitive research."

In my case, these are true answers, but I never get more than one sales call from anyone.

I can't help you on the email front, but it's easy to set up filters for those.