Hi, i’ve recently created a pmm-server ( monitoring system for server & mysql ). A pmm-server act as a server and client can connect to pmm-server to look on their information by using the command pmm-admin. For more info Click in this link

https://www.percona.com/doc/percona-monitoring-and-management/deploy/server/index.html

Setup SMTP server
For this example you can refer to the link below , for my pmm-server , i am using google smtp server as my smtp relay server.
https://www.percona.com/blog/2017/01/23/mysql-and-mongodb-alerting-with-pmm-and-grafana/