[epub] recommendations?

[Karen White <karen@xxxxxxxxxxxxxxxxxx>]

I currently have a mailing list for people who attend our craft shows... 
basically I just email them to let them know the time/place etc.  Right 
now I'm sending them out in batches of 25 since my ISP doesn't like 
anything larger than that.  Needless to say it's getting extremely unwieldy.

I need to update!  I want to start a monthly newsletter also.  I thought 
about yahoogroups since of course it's free.  But I hate the idea of 
sending those ads that yahoo sticks in, since I don't know what they'll 
be... might upset some readers.

On the other end of the spectrum, my web hosting service offers Lyris, 
but that's $50 a month.

I would like to be able to enter emails in one place, and then have 
several lists.  For example, one list would be to announce shows in area 
A, one list for shows in area B, and one list for a general newsletter.  
A person could be on one, two, or all three lists.  The newsletter list 
might contain several thousand names.  I would not need to send html emails.

Does anyone have any recommendations for me, about a list service?

Thanks in advance,
Karen White
Natural Impulse Handmade Soap
http://www.naturalimpulse.com