Must-have with large communitys based on BuddyPress

PersonalMessage(PM) in BuddyPress is build so that it loops around Sendmail() for each mailrecipiant. With a large community, where each member can send to all other members, the processtime is so large that you will get time-out, before the task is done..

SMTP Mailing Queue is so fast, that sending PM (with mailnotification) to more than 400 recipients takes mere seconds.

Without SMTP Mailing Queue my Extranet wouldnt work. A Must-have!