Have you considered a rain cloak? The rain cloak (and shelter) by Onewind is amazing! I wear it as everyday rain gear instead of a rain jacket. The hood is spacious and adjustable. The cloak drapes over backpacks, shopping bags, and even children. I have yet to use it as a shelter or while biking, but here is a review from a cyclist:
It began to rain as I rode my bicycle down a local gravel road. I put on the rain cape, pulled the hood over my helmet, and threw the front of the cape over my handle bars. I stayed magically dry. Can't wait to sleep in the shelter; what a system!
I use Tuta mail. It is entirely open source. There are both paid and free tiers. I started on a paid tier, then downgraded to free. I like the option of a usable free tier when money is tight. I use addy.io for aliases.