Everyone will tell you that if you have someone interested in what you do, you need to keep in contact with them.
A mailing list can be really useful but gets very complex very quickly. Did you send your last newsletter out to everyone? Does someone want to be taken off the list? Are people reading what you send them?
Luckily there are a number of mailing list management services which will keep an eye on all of this for you for free. They add new names to your list, send out e-mails you write to everyone, some of them track if the e-mails have been opened and will take people off the list if they want to leave (which is now a legal requirement). So, save yourself sleepless nights and get these online services to do the work for you.
Mailchimp - is an e-mail newsletter service with attitude and - we really like this - a Monkey which tells you jokes when you log in! Apart from the frivolity, they offer an exceptional service full of flexibility. You can afford to be quirky when you are so good at what you do!