In general it is not a good idea to send data as email attachment to the email discussion list. You should consider that your data file will end up in ~700 email inboxes of all other people that are subscribed.

If the data that you want to send is too large (i.e. larger than one MB) to send to one of the developers in person, then you can upload it to ftp://ftp.fcdonders.nl/pub/incoming. Note that this is a write-only dropbox, so you (and others) will not be able to see what is copied into that directory. Within the Donders we are able to see the full directory content.

Alternatively you can use http://www.dropbox.com, http://www.sendspace.com (probably the most straightforward method), http://www.yousendit.com, http://www.cutesendit.com, or one of the other file sharing methods that is described here.

Please note that you can also use these sharing websites in case you want to share a part of your data with the people on the email discussion list.