These are the primary ezines I read- none are “subscription” (like Artforum for example) but all have email lists and you can give financial support to any of them! If you are subscribed to this blog, the majority of artists that I mention I discover (or discover more about) on these platforms.
You can also sign up for Artsy– their site will allow you to follow artists and galleries and they often publish “people to watch” lists.
There are also some good blogs you can follow:
13 Ways of Looking at Painting
And these Instagram feeds are pretty good sources of abstract painting, too:
Painting After Art is Dead 