Implementing an email notification system to communicate with users in case of pool changes like pauses or removal is a great idea. It would be an effective way to keep users informed of any changes that may affect their pooling experience. This system could also be used to notify users of any new features or updates to the pooling system. By having an email notification system in place, users would be able to stay up to date on any changes that may affect them, and they would also be able to provide feedback to the pooling system. This would help ensure that the pooling system is always up to date and running smoothly. Additionally, having an email notification system in place would help to reduce confusion and frustration among users, as they would be able to stay informed of any changes that may affect their pooling experience.