Hi
I'm sorry for my late response, but I didn't get any notification about your reply.
Well, that's exactly what I'm looking for, but the plugin you're referring to works only for AcyMailing v5.x , I need the same feature but for AcyMailing v6.x .
Here @Alexandre wrote: "We will bring it back in the next development sprint. So this might be available before the end of the year [2019]", so I thought I might have missed it.