The program can connect to mail servers using the POP3 protocol, receive the number of email messages in the mailbox, and analyze their contents (message text, subject, etc.). This check is intended not only for monitoring the health of mail servers. With the help of it, you can find out about the state of some external systems that report themselves to e-mail (like IP cameras, DVR/NVR, CCTV, and security alarm systems). For example, video surveillance DVRs are able to send mail messages in case if some event or a security alarm occurs. You can read more about this in the article in the CCTV monitoring topic.
The POP3 check allows you to connect to the mail server using a secure SSL / TLS channel or a regular (unsecured) connection. Proxy server connections are supported.
You can configure the check so that it will check messages from a specific sender only, without analyzing all the others. To do this, you need to specify the address in the Consider only messages from... field. You can also set the depth of the search for emails by specifying the time period (in days or hours) for which messages in the mailbox should be parsed. The date substitution keys are supported for searching the specified strings in the message text or the subject. This can be useful for selecting messages with a specific date in the text.
The check's logic can also be customized. You can define the following conditions:
Requirements: Windows XP/Vista/7/8.1/10, Server 2003/2008/2012/2016/2019/2022 supported.