def added_as_coauthor(new_author, proposal, author)
recipients new_author.name_and_email
cc author.name_and_email
from SysConf.value_for('mail_from')
subject comas_title(_("You have been added as a coauthor"))
body :conference_name => proposal.conference.name,
:orig_author_name => author.name,
:new_author_name => new_author.name,
:proposal_title => proposal.title,
:proposal_url => url_for(:only_path => false,
:controller => 'proposals',
:action => 'show',
:id => proposal),
:login_url => login_url
end