[administrivia] digest mode for semantic-web mail list

I'm sorry to send this kind of question to the main list, but the mail 
server documentation doesn't mention it. And the instructions for a human to 
reply with help at http://www.w3.org/Mail/Request did not work. Does anyone 
know how to subscribe to semantic-web@w3.org in digest mode?

Thank you,

Gustavo F.