I’d avoid Google, they don’t have a stable offering
What you you mean by not stable?
I’ve been (stuck with) Google Workspace for many, many years - I was grandfathered out from the old G-Suite plans. The biggest issue for me is that all my Play store purchases for my Android are tied to my Workspace’s identity, and there’s no way to unhook that if I move.
I want to move. I have serious trust issues with Google. But I can’t stop paying for Workspaces, as it means I’d lose all my Android purchases. It’s Hotel fucking California.
But I’ve always found the email to be stable, reliable, and the spam filtering is top notch (after they acquired and rolled Postini into the service).