PowerMTA is specialized, high-performance Message Transfer Agent (MTA) software that intelligently and efficiently delivers large volumes of e-mail, allowing for maximum delivery and response.


PowerMTA is fast and reliable SMTP application provided by port25, some people have known it as port25 application also.

It is the popular application among commercial SMTP provider, where all popular SMTP service providers are using this PowerMTA application. Some of from these big brands are Sendgrid, Mandrill, MailChimp, SMTP, and Sendloop.

PowerMTA has the functionalities to process inbound and outbound messages through standard SMTP protocols or by various programming interfaces, and routing those emails based on DNS (Domain Name Service).


Supported submission and delivery interfaces by PowerMTA:

There are various interfaces supported by PowerMTA  for inbound and outbound emails process.

PowerMTA support email submission by:

  • standard SMTP
  • C and C++ programming API
  • .Net programming API
  • Perl programming API
  • Java programming API
  • using “pickup” directory

PowerMTA support email delivery by:

  • standard SMTP
  • Delivery to local program


PowerMTA Monitoring and Management Tools:

PowerMTA is designed for less configuration and minimum management to run a highly reliable SMTP service. And for monitoring and analytics purpose also is intended to get data in various format.

There is the various inbuilt tool in PowerMTA for monitoring the performance, out of those these three are very very easy and essential:

  • Web based Monitor
  • Command Line tools
  • Logging Structure

PowerMTA Web-based Monitoring

PowerMTA has inbuilt Web-based monitoring tool which is running on HTTP inbuilt server with some port, which we can configure in powerMTA configuration file.

In this tool, you can check the queue, error, jobs, email status, logs, delivery status, bounce status, failure and more. If you enable this monitoring with admin privileges, you can check the main configuration file and can also edit from this web tool.

Here I am sharing some screenshot of PowerMTA’s Web-based monitoring tool:

PowerMTA Command Line Tools

PowerMTA command line tool is just a combination of some commands which can help you to get information on server terminal which we have already mentioned in the web-based tool.

Here also I am sharing some screenshot of PowerMTA commands which is extracting information about the status of PowerMTA, PowerMTA queue, queued domain, queued top domain, PowerMTA version, etc.

PowerMTA Logging Structure

PowerMTA logging structure is very powerful, where you can collect all logs in “.csv” file. We can create a single log file for all reports or making a different- different log files for accounting, bounced email, queued emails, spam emails, etc.

PowerMTA command line is the primary tool where we no need to execute any commands or go through the web-based portal through browsers. It is only one-time configuration which we can configure in PowerMTA configuration file and forget, it will automatically generate log files in given format on log directory.

Here in this article of PowerMTA introduction, we cover the information of PowerMTA, we will include configuration and management in our upcoming articles.

If you have any doubts, you can ask me by commenting below.

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