If you want to send out large mailings easily to safelists and mailers then you need to be using Referral Frenzy. This is the big one. It is not free, but the expense is minimal based on your time savings. Your time is valuable right? You can simply fill in any safelist in the back office that you are in (as long as they are in the master list). Once you get these connected, you can mail out to a ton of safelists and mailers all at once. This is a real time saver. If you are not using this program yet you should take a look. (yes I am an affiliate of this program and will earn a commission if you decide to purchase anything through my link – thanks).