Yes, paying members have the option of being notified (once per day via email and/or push notification) if a film in their watchlist arrives on one (or more) of their favorite streaming services. You must have at least one favorite service selected, and at least one relevant film in your watchlist in order to receive this type of notification.
The notification settings are split into three tiers, based on the type of new availability: i.e. whether the film is available to buy, rent or stream. We do our best to combine push notifications into a single alert, where it makes sense (for example, when a single film arrives on multiple services).
Watchlist alerts are powered by data from JustWatch, and may lag updates to its service by up to 24 hours. Because we receive updates once new films are available, we are unable to offer alerts when films are due to leave their respective services (we aren’t warned ahead of time for removals).