[tlug] OT: Mailing List Recommendations

["Greg Thomson " <gregt@example.com>]

Looking for a free mailing list service.

Here's the situation: My wife is part of a number of small groups. Their  
main method of communication is keitai email.
This works well when their are a few recipients. However any more than the  
5 address per message limit her keitai imposes becomes tedious. Currently  
one group has 20 members - this requires the same message to be sent 4  
times. I suggested she get a mailing list.

Requirements:

Japanese Support
Easy to setup, add members and maintain. (This is quite a technically  
challenged group of women.)
Supports email to and from keitai's with web access a plus.
Private

Two possibilities are Yahoo Groups (jp) and Google Groups (jp).

I have used neither of these so I'd like to hear the lists feedback.
Any other comments or suggestions welcome.

Greg.