Push or SMS Notifications for Pending Upsell Requests

Currently, Hospitable sends email alerts for upsell requests that require host approval. However, for many hosts, these emails can get lost in high-volume inboxes or spam, leading to delayed responses to guests.

The request is to implement immediate push notifications or SMS alerts specifically for pending upsell approvals. This would ensure that teams are notified instantly and can approve or deny requests promptly without having to manually monitor the inbox or rely solely on email.