@tejan the only correct way to deal with this is using proper #E2EE like #PGP/MIME & anonymous eMail accounts.
Same goes with #Messengers, which is why I only recommend #XMPP+#OMEMO (i.e. @monocles / #monoclesChat & @gajim / #gajim ) & PGP/MIME (i.e. @delta / #deltaChat & @thunderbird / #Thunderbird), because unlike #proprietary #SingleVendor & #SingoeProvider solutions, they offer #SelfCustody so even if a provider is cooperative or served a #subopena or got theor equipment seized, they can't decrypt the contents!