Postmastery

About Postmastery

Postmastery is dedicated to helping senders maximise their email performance and deliverability with a range of software, tooling and consulting solutions. Offering an all encompassing service to ensure senders can maximise performance and deliverability that includes vendor selection, MTA licensing, tuning, DMARC, training and the Postmastery Console – a powerful yet user-friendly suite of real-time monitoring tools.

Postmastery global clientele includes email service providers (ESPs), marketing and advertising agencies, as well as e-commerce companies benefit from our vendor agnostic, independent approach that is cost conscious and looks to provide enterprise grade solutions at extremely competitive price points.

Postmastery is a global channel partner for a variety of MTA vendors including PowerMTA, GreenArrow, Halon, KumoMTA and Postfix and provides integration services, local support and delivery optimization services.

Keywords

• Dmarc
• Email Compliancy
• Email Deliverability
• Email Infrastructure
• Email Security
• Greenarrow
• Halon
• Kumomta
• Mta
• Postfix
• Powermta

Address

• Headquarters

  Entrada 10001114 Amsterdam-DuivendrechtNoord-Holland, Netherlands

Team by function

Based on 3 public job profiles as of 3 September 2026.

• Engineering / Software Development1
• Founder / Owner1
• Marketing1