You are already writing a regular e-newsletter. The open rates are good and you think you are doing just fine. Tweeting will just be additional work for you and you don't think it will work for your business.
What are you missing out on?
1) You are missing out on market trends, and fresh ideas for writing your eNews.
It's not all about what you twit it is also about who you follow. If you follow your industry experts you will always get the latest news and advise. You will find this an invaluable resource for better content writing.
2) You are missing out on fresh blood for your opt-in list.
If you don't actively twit, you won't have followers, you can't direct the traffic to your eNews subscription page. If you like this idea, don't tweet the URL of your newsletter, tweet them to your sign up form. This way you can capture them before they generate a whole lot of anonymous clicks.
However for this to work you'd better be a good twitter. There's only 140 characters available and your content has better be unique and compelling.
It's not hard and it costs nothing.
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