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Marketing SMS, voice and push to Israeli numbers are blocked during quiet hours and Shabbat. This is a legal requirement, enforced at the send worker.

Nightly quiet hours

20:00–08:00 local time. Marketing SMS/voice/push don’t send in this window.

Shabbat

Friday sunset to Saturday nightfall — computed from real sunset in Jerusalem (NOAA/USNO), with candle-lighting (−18 min) and havdalah (+40 min) offsets. Not a fixed-hour approximation.

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Email is exempt

The legal quiet-hours + Shabbat block does not apply to marketing email. Email still respects any window the merchant configures themselves.

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Tenant custom quiet hours

A workspace can add its own quiet window (Settings → Sending), but only to tighten the legal floor — never to widen or re-open it. The gates compose the two with OR: an extra window can add blocked hours, but can never re-open a legally-blocked one.
You cannot configure your way out of the legal window. The legal floor is always checked first.

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Overrides

An explicit tenant SMS override goes through the campaign config (overrides.quietHours / overrides.shabbat) and is recorded in the audit log — it’s never inferred. This is for genuine transactional exceptions, not a way to blast at 02:00.

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How it interacts with scheduling

  • Best-time sends walk each recipient’s candidate hour forward past any quiet window before scheduling — compliance dominates the model, and the legal window is never bypassed even with an override.
  • Flow wait timers that land inside a quiet window defer to the next allowed time rather than sending.
  • Scheduled campaigns that would fire in a quiet window defer per the same gate.

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Channel summary