* Brevity is the soul of wit. No one will read your newsletter you open it and are already slain with text on first sight. Always keep content clearly structured and simple.
* It's all about style. Indeed, it is more likely that people will have a closer look it the newsletter is visually appealing. Try to make it well designed and put some pictures or graphics in. Furthermore provide various links back to your website.
* Professionalism scores. Do never send your newsletter before you ensured that it looks appropriate and eventually that the links do all work. The newsletter should attract potential clients and not make the shake their head due to sloppy appearance.
* Timing is everything. The time to send out your newsletter is very important and will have an influence on the reaction. Generally it is advisable not to send it on Monday mornings and Friday evenings. But the right time also relates to the particular target group and their habbits.
* Keep track. After the newsletter is sent out don't just sit and wait, but test its effectiveness and track its progress.
* Last but not least. It should be easy for the reader to find your contact details and also to unsubscribe for your e-mail list
There are many e-mail-newsletter programs around which will help you creating and distributing your message.