email vs newsgroup

[Emory Smith]

hello,

sorry about the silly question but im a little confused here and hoping 
someone could set me straight...

i have been subscribed to gnu.emacs.help as a mailing list 
(help-gnu-emacs@gnu.org) for a couple months.  over the last few weeks 
the number of messages has dwindled to a couple per day.

this also seems to be the case with the archives at 
http://mail.gnu.org/archive/html/help-gnu-emacs/  however, the 
newsgroup appears to have all messages.

does the mailing list contain only a subset of what is in the 
newsgroup, and should i use the newsgroup instead of the mailing list 
to get all messages?

thanks, emory