Notification Preferences API digest mode versus legacy email notifications in Moodle 4.0

Goal: determine whether the Batch digest mode overrides the legacy ‘Enable email notifications’ checkbox when both are configured for a role.

Uncertainty: the Moodle 4.0 documentation does not specify if the digest setting bypasses the legacy email toggle, and later releases (4.1‑4.2) may have altered this interaction, leaving administrators unsure if disabling the legacy option blocks digest emails.

Administrators seeking clarity must rely on version‑specific testing in a controlled environment to observe actual email delivery when both controls are present.

Questions: Does enabling Batch digest for a role send digest emails to users who have the legacy email notification disabled? Does the legacy checkbox act as a hard override, or is it ignored when digest mode is active? Are there any version‑specific differences between Moodle 4.0 and later releases that change this interaction?