可靠的站点错误通知系统？

I have a hobby wesbite written in PHP and I like to know if there is a problem with it (database errors, an update broke something, etc.) I have a simple notification system which sends me an email if there is a problem and that would be enough for me. Unfortunately, the mail sending feature of the hosting provider is not very reliable. Usually it works, but there are periods when it simply swallows the mails and doesn't send anything.I have a hobby wesbite written in PHP and I lik