We publish a substitute list only where a record says what kind of product it is. Inboxes App's does not yet, so this page names none. The Email category lists every offer we track alongside it.
Current Inboxes App Situation
Risk Level:source unconfirmed
Why: We could not read the page we cite for Inboxes App when we last looked, on 2026-11-10. We are not publishing a stability judgement for it until that is fixed.