No doubt anyone who reads this blog uses emails. When it comes to reading emails there is a certain amount of trust in who it actually came from but you never really know, especially with worms replicating and using Address Books to attack. Well to provide some simple trust, one company is providing free, personal, email certificates with 'no catch', and can be used indefinitely at no cost.
If you send emails and just one of them contains important data have a look-in.