What software to use to monitor logs?

Question

linux

What software to use to monitor logs?
Good afternoon! Requires software to monitor logs with email alerts.
I used zabbix before, but due to the large monitoring queue, triggers are triggered with a delay, in this situation this is not acceptable.
It is necessary to monitor several files, in case the necessary lines appear, alert to soap.
grep | mail do not offer

Answer 1

xmodulo.com/monitor-log-file-linux-logwatch.html

Answer 2

Have a look at nxlog
If you don't need a Web Peeper, this is

Answer 3

If rsyslog is used, then it has a mail module (as it is called), it can be configured to send an alert when the necessary lines appear in the log