ad_on_is
Except for the fact that you’ll need to update your email address in so many places.
Which is actually a good thing. Might sound scarry and counterintuitive at first, but is the right way to go.
Especially with a custom domain, (can be smth cheap for 2 bucks a year) and using aliases for all the different places… like onlyfans@mydomain com… this prevents other malicious services from sending spam to your main email adress, since you can just delete the alias.
Haven’t done it myself, but his might help you for further research
iptables
https://unix.stackexchange.com/questions/264589/traffic-of-specific-program-through-vpn
network interfaces
https://unix.stackexchange.com/questions/234583/routing-on-per-application-basis
Just a friendly reminder, that Israel is an Apartheid state - according to the ICJ.