For another email provider alternative, I would suggest Forward Email. I still haven’t used them yet, but my goal is to switch to them from Proton when I get around to it.
I was thinking of playing around with email hosting, at least for offline backups, and I’ve been interested in using Stalwart.
I also suggest Porkbun for purchasing a domain.
Here’s a video (YouTube) I saw recently that talks about the experience of using a Milk-V Jupiter in 2025.
I have a Star64 from Pine64 that I have been meaning to play with. I would say 2030 may be early to expect daily driving a RISC-V device, but you can start playing with RISC-V and becoming familiar with the system so the transition becomes easier once the platform becomes more mature.