That's what we've been doing for our rural town's group. The problem we keep running into is that the fliers keep getting taken down, and we don't have the money to keep replacing them.
I argued hard against setting up as a Facebook group and volunteered webspace for our own site instead, but I keep hearing complaints at the meetings that our emails aren't reaching them, and they always suggest that we use Facebook or X instead. We aren't getting a lot of bounce messages, so it's either getting lost in the spam box, or people aren't reading the emails, and I'm not sure how to fix that.