> Furthermore, I'm interested in what their solution for email, calendars, and all the other Google services look like.
There are no built-in apps for that. The only custom apps GOS provides are Auditor (https://attestation.app/), Camera, Calculator¹, Contacts¹, Files¹, Gallery¹, Messaging¹, a hardened PDF viewer, and Vanadium (a hardened version of Chromium). Everything else is up to you.
There are no built-in apps for that. The only custom apps GOS provides are Auditor (https://attestation.app/), Camera, Calculator¹, Contacts¹, Files¹, Gallery¹, Messaging¹, a hardened PDF viewer, and Vanadium (a hardened version of Chromium). Everything else is up to you.
¹) AOSP app or fork of the AOSP app.