For those of you interested in running a conference, here is the template I used for the snail mail invite for the MelbourneDAC academic board. This was sent on letterhead to those who required one after the email invitation.
Offical name/title
address
date
Dear Name Goes Here (duh),
As Academic Chair of the forthcoming international digital arts and culture conference, melbourneDAC, I would like to invite you to join the conference Academic Board. The full academic review board consists of a panel of invited international academics with expertise in various areas of digital culture, aesthetics, and theory, and members of this Board have nominated you as an expert peer.
Your duties as a member of the Academic Board will be to review papers submitted for the conference and to participate in Board decisions about the academic management of the conference. All submitted and accepted papers will be published in the conference proceedings, and so your role is to provide commentary, criticism, and editorial opinion for those papers that you review.
As a fully peer reviewed international conference, with a full published proceedings, submitted work is to meet a high standard and I believe your expertise will contribute to this process substantially.
If you wish to accept this invitation then please contact me via email at either adrian.miles@rmit.edu.au or adrian.miles@uib.no
Yours sincerely
Adrian Miles
MelbourneDAC conference chair