When scheduling a service for cancellation as an admin, there is an option for "Send service cancellation email". This setting will control whether an email is sent on cancellation, to the client, but it also controls whether an email is sent to the client that the service has been scheduled for cancellation. As a result, the language for the tooltip should be updated to reflect that.

It currently says:

The cancellation email will only be sent if the cancellation occurs immediately. Otherwise, the email will be sent at cancellation dependent upon the company or client group setting controlling this behavior.

Update it to say:

A scheduled cancellation email will be sent immediately, unless the cancellation occurs immediately, in which case the cancellation email will be sent instead. Otherwise, the cancellation email will be sent at cancellation dependent upon the company or client group setting controlling this behavior.

There might be a better way to say that, if so go for it. I am also assuming that if the service is cancelled immediately, we will NOT send a scheduled cancellation email but only the cancellation email.