Segment: template, date, mails. Campaign: grouped statistics. bzr revid: tde@openerp.com-20130903145936-nwy250w1suxmtbl3
simple mass mailing campaign model, linked to emails, compute some statistics mail.compose.message updated to the mass mailing campaigns in mass mail mode bzr revid: tde@openerp.com-20130807130334-nwd34fgsz4lc6lt1