@kkarhan@infosec.space@ploum instead of @signalapp which also falls under #CloudAct and is also a #Proprietary, #SingleVendor & #SingleProvider solution, consider #XMPP+#OMEMO for real #E2EE with #SelfCustody of all the keys!
Fir #eMail & #Chat, I can recommend @monocles as a paid provider who doesn't run #ads and doesn't fall under Cloud Act or similar laws. (Also they have excellent #Apps that work with basically all providers usibg standard-compliant servers & APIs!)
You may want to consider #Torifying everything by using @guardianproject #Orbot and push everything on #mobile through @torproject / #Tor.
In fact, some providers like cock.li even have #OnionServices to directly connect to them.
#MicrosoftOutlook literally steals your Login #credentials, so using @thunderbird is a necessity anyway. Don't forget to change your logins either way!
#Firefox is okay, but #TorBrowser should be normalized as well.
Consider launching a @cryptoparty to teach other the same.
Nirmalize using @tails_live / @tails / #Tails as your #DailyDriver!