B2B From Address

For years we've sent email blasts about every other week.  We've used our Sales VP's email:  [email protected].  We're making a shift and Marketing is going to be sending a lot more emails on behalf of the sales team, sending smaller blasts, but more like daily.  We've decided that using his address just isn't going to work, between bogging down his inbox and requiring him to be the one checking for reply tos.  

What do you guys recommend?  I've heard things like info@ and marketing@ get flagged too easily.  But it seems like lots of other companies are using it.  Also seems like a lot of the major brands we get mass mails from are using a 3 piece domain, like @em.1800flowers.com.  Would that help deliverability?  Let me know your thoughts.  Thank you!