I don’t use it myself, but I believe Proton (or Proton Mail?) doesn’t require any additional info. At least back when I checked it out before. There’s also mail.com, as well as a plethora of pros & cons lists for email providers out there to google (with add blockers).
I’ve done enpugh raids in SV that I can 1 to 100 any pokemon on an instant thanks to all the exp candies I have. High level raids drop them a lot, and some events can get you up to 999 Large candies.
Lower level raids still drop lower tier candies. Mid game grind shouldn’t be too bad when doing the overworld auto-battles, I don’t remember what those are called.