Qalculate is great. I also use insect on the terminal for quick calculations or conversions https://insect.sh/
Posteo (which i use) and mailbox are great paid options For free e-mail you'd go with protomail or tutanota
Qalculate is great. I also use insect on the terminal for quick calculations or conversions https://insect.sh/
Posteo (which i use) and mailbox are great paid options For free e-mail you'd go with protomail or tutanota