Message in a bottleneck: if your clients are like 77% of all e-mail users, they receive as many as 100 spam messages a day. How can you make your company's legit e-mail marketing message stand out from the infamous crowd? And how can you ensure your clients don't see you as a spammer too?

It starts innocently enough. You receive a 'joke of the day' e-mail from a colleague, open it, and send it along to 15 recipients, thinking, 'This will brighten their day.' [...]