The tool is good, it has a clear focus on a niche market: content creators.
I bought 3 codes and am still not entirely satisfied with the tool.

Actions as simple as forwarding emails (especially the subscription) become tedious.

There is also no possibility of sending a personalized subscription email, for each list. It is a single subscription email for all your lists, therefore the segmentation is relative.

There are some more details that do not convince me but I hope that in the future it will improve. I see potential.

I had opted for this tool but ended up hiring Mailpoet.