There are several free CRMs, one I've used is MailChimp. You can have up to 500 names and post as many newsletters as you want each month. I have recently switched to AddressTwo. It was developed by Nick Carter of Indianapolis. I like it because it is more suited to my business in the way I want to follow up with clients. Many of the CRM systems are more set up for sales people who sell products and weren't easy to use. You can try it free for the first month. This is the address: www.AddressTwo.com