Can’t you do that with Wine for the most part?
Oh you silly goose!
What about plus addressing which is supported by most major mail services for free? You can just use personaladdress+nameofshop@gmail.com for example.
Kubuntu and everything is good too but I don’t know what to do with it.
Why are people on your LAN exploiting vulnerabilities on your computer? Don’t you also have a network firewall and NAT?