PRTG: Ensuring the safe
delivery of your emails

  • PRTG tests the availability and response time of your mail servers
  • PRTG monitors the performance and database of your Exchange Server
  • PRTG supports the following protocols: POP3, IMAP, and SMTP


Free Download
  • Unlimited version of PRTG for 30 days
  • After 30 days, PRTG reverts to a free version
  • Or, you can upgrade to a paid license anytime

PRTG increases the security and performance of your mail server

How reliable is your mail traffic?

For companies, reliable mail traffic is a must. Email is not only used to coordinate workflows amongst colleagues, but also to make arrangements with customers and service providers. When it comes to sending time-sensitive documents, mail server crashes can seriously affect the success of your business.

PRTG monitors mail servers

By monitoring Microsoft Exchange and other mail servers, you can prevent such crashes. PRTG monitors the availability and performance of your mail servers, and checks to make sure your emails are delivered properly. If action is required, you’ll be notified at once, often before others know that something is up. Your employees count on being able to send and receive emails without stress.

With PRTG, everyone will work with peace of mind.

How does email monitoring with PRTG work?




 i What is a sensor?

In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.

View video (3:26 min.)

PRTG comes with several pre-configured sensors that make it easy to ensure the smooth functioning of an email system. For example, our 
SMTP & IMAP Round Trip Sensor and SMTP & POP3 Round Trip Sensor monitor the end-to-end delivery of your emails. Thanks to these sensors, you can keep a constant eye on the functionality and performance of your network's entire email transmission process.


Email round trip monitoring explained in three easy steps:


PRTG sends a test email via SMTP to the mail server (or email client).



The SMTP server delivers an email to a POP3/IMAP server (at another location, in a LAN or on the same server).



PRTG checks for emails from the POP3/IMAP server every second until the test email arrives.



If the Email Round Trip Sensor displays no errors, then you will know that your server accepts emails via SMTP, that emails are able to be sent (i.e. your Internet connection and MX lookups are working fine), and that emails can be sent from outside your email system and retrieved via POP3 or IMAP.

PRTG also comes with sensors made especially for POP3, IMAP, and SMTP. These sensors use the respective protocols to check the availability and response time of your mail server.

Thanks to PRTG, you can monitor every aspect of your Exchange Server. Keep an eye on the size of your mailbox and database, and make sure your Exchange DAG is working correctly. PRTG also lets you monitor your Exchange Backups, message queues, and public folders. The PRTG Exchange Server sensors use Remote PowerShell to retrieve their data.

Your Exchange Server thus remains a reliable part of your IT infrastructure.

A sneak peek into mail server monitoring with PRTG


4 good reasons to choose PRTG as your email monitoring tool

Secure mail traffic

PRTG is quick to discover mail server failures. You’ll get to the root of problems well before work processes take a hit.


The PRTG dashboard provides a handy overview of the status of your mail server and the current performance of your email transmission


PRTG sensors continuously check the availability of your email services, and notify you in the event of errors. With PRTG, you'll rest assured that everything is in working order.

Easy setup for MS Exchange (among others)

The PRTG Auto Discovery feature lets you install and configure your email monitoring within minutes. Pre-configured “device templates” are available for MS Exchange, as well as other servers.

Quickly check the status of your mail servers
– even while on the go

PRTG can be started within minutes and it's compatible with many mobile devices.


PRTG comes with all the features you need, plus more your IT infrastructure won't want to live without.


PRTG monitors these vendors and applications, and more, in one view!


Trusted by 300,000 users
and recognized by industry analysts as a leader


“Fantastic network and infrastructure monitoring solution that is easy to deploy and easier still to use. Simply the best available.”

Read more reviews

“Software is absolutely perfect, Support is superior. Meets all needs and requirements, This is a must have solution if you are needing any form of monitoring.”

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“The tool excels at its primary focus of being a unified infrastructure management and network monitoring service.”

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  • Unlimited version of PRTG for 30 days
  • After 30 days, PRTG reverts to a free version
  • Or, you can upgrade to a paid license anytime

What kind of data is collected by PRTG?

PRTG uses a number of pre-configured sensors for its email monitoring:

  • POP3 Sensor, IMAP Sensor, SMTP Sensor: Availability and response time
  • Sensors for Exchange Backup, Exchange Database, Exchange Database DAG, Exchange Mail Queue, Exchange Mailbox, Exchange Public Folder, PowerShell: Key Exchange Server information such as size, status, and capacity
  • SMTP & IMAP Round Trip Sensor
  • SMTP & POP3 Round Trip Sensor

Round Trip sensors gather the following information:

“I particularly like having breakfast at home and just surveying my domain, and understanding what's working and what isn't.”

Steve Coppin, Oxford University


PRTG makes life easier!

Let our monitoring software keep an eye on your mail servers.
Use the time you will save to focus on everyday tasks, such as checking emails.

PRTG saves time

PRTG is a comprehensive email monitoring tool. The PRTG dashboard and app provide for a quick and thorough overview.

PRTG saves worry

Monitor the end-to-end delivery of your emails, conveniently and around the clock. The built-in alarm feature of PRTG is quick to notify you in the event of problems, allowing you to send and receive emails in total security.


80% of our customers report substantial savings in the area of network management. And licenses costs pay for themselves in an average of only a few weeks.

PRTG The Swiss Army knife

PRTG: The Swiss Army knife for sysadmins

Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems
  • REST Custom Sensor: Monitor almost everything that provides XML or JSON

Over 95% of our customers recommend PRTG

Paessler AG created an extensive survey to interview more than 600 IT departments worldwide who use PRTG. The goal of this survey was to optimize and fine-tune our network monitoring software to better meet the needs of administrators.

One survey result: More than 95% of the participants would recommend PRTG - or have already done so.


Still not convinced?



More than 300,000 sysadmins love PRTG

PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.

Still not convinced?


Monitor your entire IT infrastructure

Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.




Free Download



Try PRTG for free

Everyone has different monitoring needs. That’s why we let you try PRTG for free. Start now with your 30-day trial.



Network Monitoring Software - Version (May 26th, 2021)


Download for Windows and cloud-based version PRTG Hosted Monitor available


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Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications


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