How to realize email alarm notification and free SMS alarm notification

E-mail alarm, if you don't send a lot every day, you can call Netease, QQ and other mail servers to send e-mail error messages. If the daily usage exceeds 500, I suggest you find a third-party mailbox provider or you can build your own mailbox system through technology.

Short message alarm, whether it is a personal mobile phone or a regular gateway, the sending of short messages has to go through the operator, which has a cost. It's not free. If there is a free estimate, it is also a set, and the cost of Babu SMS is not much. You can understand.

I hope my answer can help you.