If you don’t get notifications from Flypool. You can use this simple application to monitor mining process. Mining Monitor helps to monitor ZCash mining process ans send notification if hash-rate decreased on 30% or more. You can configure it.
It works only with Gmail. But it is not too hard to create @gmail.com mailbox.
You can download program here: https://drive.google.com/open?id=1S3I7of8pqywEfK6mVfwcAa4WqyO1DQq9