For artists and collectors sponsored by Intercal...your mohair supplier and Johnna's Mohair Store
I use Yahoogroups.com for my mailing list.. people can opt out easily... and many collectors are already on Yahoo for the groups or with mail.. etc. Works for me.. although I've had one complaint.. but since my mailing list has over 100 people on it I don't think that is too bad.
Hugs!
Melanie