We are adding functionality to the Partner API so partners can create webhooks through a new 'Webhooks' page in the Partner Administration dashboard and select the events they'd like to be notified of when they occur. This functionality allows partners to integrate with systems such as a CRM to send their users related emails when they go through specific workflows in the application. 

You can find the complete documentation for Webhooks here: https://partnerapi.rallyup.com/#webhooks.