The alternative for PowerMTA and MailerQ is here!

Easily compare ProMTA™ with MailerQ and PowerMTA in the table below and change to the number 1 solution available, ProMTA™



An SPF record is a type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send email on behalf of your domain.

ESP-Service will fully setup SPF for you without any costs.

Domain Keys Identified Mail (DKIM) is an email authentication method designed to detect email spoofing. It allows the receiver to check that an email claimed to have come from a specific domain was indeed authorized by the owner of that domain.

ESP-Service will fully setup DKIM for you without any costs.

Domain-based Message Authentication, Reporting and Conformance (DMARC) is an email-validation system designed to detect and prevent email spoofing. ... DMARC is built on top of two existing mechanisms, Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM).

ESP-Service will fully setup DMARC for you without any costs.

Sending Speed

Auto Throttling

To make sure your emails are never offered too fast, or too slow, ProMTA™ comes with auto throttling.

Auto throttling offers your emails at the best possible speeds, without the risk of flooding ISP's and to prevent blacklistings and blocks. All speed throttling is done on a per IP / per campaign / per receiving domain basis.
Auto Warm-up schedule

With the auto warm-up feature ProMTA™ assures that your newly added IP's are warmed up properly.

In the MTA backend you can easily see where your IP's are in the warm-up schedule and the used sending speeds and volumes.

User Control Panel

Included in licence

ProMTA™ comes with a control panel where you get full insights to your MTA at no extra costs.

(The management console from PowerMTA is available from version 4.0, with a separate paid license.)
Real-time statistics

ProMTA™ provides full and real-time statistics for all your email traffic.
All statistics are viewable per campaign, receiving ISP, sending IP address and a combination of them.
IP Management

Within the backend of ProMTA™ you can turn IP's on and off with just one click.
Manage your IP's without any hassle from now on.
FREE Blacklist monitoring

ProMTA™ comes with 100% free blacklist monitoring for all your IP's
Use the delist button to easily de-list your IP's from any blacklist.
Message queue management

ProMTA™ allows you to view and purge any messages waiting to be delivered.
You can purge queues all messages at once or purge based on campaign and receiving ISP.
FREE Spam score analysis

For every campaign you send out ProMTA™ calculates the exact spam score for that specific campaign.

By doing this ProMTA™ helps preventing emails not being accepted by the receiving ISP's and also prevents blacklistings.
URL Response logging

ProMTA™ analyses server logs in real-time to extract any URL's that are returned by the receiving ISP's.

With this great feature you can easily see why emails are being blocked or deferred and how to solve this.
Proactive Spam Response blocking

If a receiving ISP rejects a specific campaign due to "spam", ProMTA™ can proactively block emails from that campaign being offered to that specific receiving ISP.

By doing this ProMTA™ assures the highest acceptance rate, which will help your IP health stay optimal. Any blocked campaigns are visible in the campaigns statistics and on a special page within the backend.

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