Looking for simple free plugin for automated post notifications!

I just want to be able to publish a post, and have a notification go out to my subscribers automatically.

Jetpack did the job fine, but I just discovered that the free plan is only for 100 subscribers - never alerted me when I went over that and they were just not sending notifs to some subscribers!

And like. I am so easily overwhelmed. I need something super simple! I don't want to have to build a newsletter out of blocks, I know it's ridiculous but I get so confused about it all.

I've been looking at dozens of plugins but everything I find either doesn't do automated post notifications - you have to manually set up each one - or else is paid, and I have no budget left for plugins.

Recs? Suggestions? Please?