If we ignore for a moment the critics who seek to torpedo anything that remotely resembles email, we'll see that email as a marketing tool still receives great favour with big businesses. Book a flight with any of the well know operators and a useful flow of email usually ensues, keeping us informed of any changes to flight times whilst at the same time sneaking us few discount offers. Within a few days of travel a cheery emails wishes all the best and thanks us for our business. This seems all very courteous and doesn't feel at all intrusive. It does after all save all those pest follow up phone calls or documents in the post. Should it get too much email allows for an easy method of termination.....the delete key. Quite the opposite to the endless dribble of viagra and bogus banking emails you find after your week away in the Algarve. OK the delete key still works but there is a massive differences between email that tells us something reasonable useful and the spam we are all generally drowning under.