As this presentation shows, email is predicted to grow from 2.9 billion accounts to 3.8 billion by 2014.
So although social networks are clearly the fastest growing communication technology, email remains a potent weapon in the digital marketing arsenal.
Business receive twice as much email as they send in a day and spam remains a constant problem.
The rule of thumb is to try and send out 70% of useful or fun information and 30% which could be termed hard-sell.
All email 'blasts' should integrate social media tools such as Facebook 'Like' buttons, tweet, or Stumbleupon options to push content beyond the original recipient.
Email should have click through options to build engagement and do send a welcome message or series of messages to engage new email subscribers. It is surprising how few businesses (1%) do this at present.
A prime motivation for people to give their email address to a company is to receive discounts and promotions. More than half expect to get a "freebie" in exchange for their address.
Old habits die hard and 58% of consumers still start their day by reading their email. So time your email releases to hit them fresh each morning, before the drudgery of the day dilutes the effectiveness of the message.