Regarding #Email, they are end-to-end encrypted if the email application supports #SMIME.

As you know, this isn't commonplace because of the rise of centralized emails servers that simply won't allow said functionality due to its incompatibility with their #SurveillanceCapitalism based business models.

Luckily, more email is happening via Apple Mail, courtesy of #iOS, which actually fully supports S/MIME for digitally signing and/or encrypting emails.