Listen, I get it. At one time I was writing a poetry newsletter, a Python newsletter, and a very-niche but high-engagement Miami Heat data science newsletter. Logging in and out every time I wanted to check out a new subscriber or edit a piece was a pain.
Thankfully, Buttondown is a little more friendly. Switch between newsletters easily, get a single bill, and don't worry about anything besides your great content.
If you're a paying user of Buttondown for Professionals, your billing plan applies to all of your newsletters, not just one.
Want to have one free newsletter and one paid newsletter? Buttondown makes that easy and painless.
You can even programmatically create newsletters if that's your jam.