How does the "your window opened" watchlist alert work?

Add a destination and a rough date range to your watchlist. Each time we refresh forecasts we re-run the gate over your range. The moment a qualifying run of days appears — or an existing predicted run flips to verified — you get one email with the days, the temperatures, the current fare, and a direct link into checkout with that trip already selected.

Rules we hold ourselves to: at most one alert per watchlist item per 24 hours, no alert unless the window genuinely changed state, and one-click unsubscribe in every message. You can preview the exact email on the email previews page.