http://gravitywiz.com/documentation/gravity-forms-notification-scheduler

Send notifications minutes, hours, days, weeks, months, and years after a notification event (e.g. a form submission).Deliver notifications on a static date. Useful for one-off event reminders and sale promotions.Send a notification before or after the value of a submitted Date field. Useful for birthday/anniversary emails, event/expiration reminders, etc.Automatically reschedule a notification to send daily, weekly, monthly, yearly forever or ending after a period of time.Freedom to modify notifications and their schedules. Reschedule notifications with ease.Schedule notifications for any notification event, including events generated by third-party add-ons.

Changelog

- Added new [`gpns_recurring_ending_timestamp`](https://gravitywiz.com/documentation/gpns_recurring_ending_timestamp/) filter hook.

- Added [`gpns_cron_schedule`](https://gravitywiz.com/documentation/gpns_cron_schedule) filter hook.