Postmaster Tools by Gmail: A Revolution in Deliverability Monitoring

In March 2024, Google launched Version 2 of its Google Postmaster Tools dashboard, its tool which allows you to monitor the performance of your domains. On this occasion, the tool was subtly renamed Postmaster Tools by Gmail! In recent months, this new tool has not failed to add new features, the ideal opportunity to take […]

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Categories: General, Postfix, PowerMTA, Solutions

Deploying Business-Critical Emails with PowerMTA on Azure: A Bluetooth SIG Case Study

Objective: new email delivery solution Bluetooth SIG sends hundreds of thousands of automated outbound messages daily and successful email delivery is critical to Bluetooth SIG’s operations. Due to various technical constraints, Bluetooth SIG started a RFP process in early 2018 to select and implement a new email delivery solution, the Microsoft Azure hosted PowerMTA Project […]

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Categories: Case Studies, Deliverability, General, PowerMTA

PowerMTA 6.0r2 released | Overview of features

On 03 January 2025, PowerMTA 6.0r2 was released. This PowerMTA update simplifies configuration with automatic MX rollups, adds a REST API for virtual MTA management and improves the scalability of accounting webhooks with concurrent HTTP connections. For more details and a complete list of changes, see below. All PowerMTA users who have an active support […]

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Categories: PowerMTA

Implement the List-Unsubscribe Header to Protect Your Email Deliverability

In our daily work, we still encounter missing List-Unsubscribe headers in emails. Reason enough to publish another BLOG post on this topic. It has become even more important recently since Google and Yahoo now include the list-unsubscribe mechanism among their requirements. What is a List-Unsubscribe header? When subscribers want to unsubscribe from a mailing list […]

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Categories: Case Studies, General, PowerMTA

Improve Email Delivery with PowerMTA’s Defer-Job Setting

Email delivery is a critical aspect of any business’s communication strategy. However, maintaining a good reputation for your email delivery IP can be a challenge, especially when using a shared IP with multiple customers. In such a scenario, the actions of one customer with a low reputation can adversely affect the entire queue, causing delays […]

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Categories: Authentication, Deliverability, General, PowerMTA

Postmastery – Appoints Yves-Marie Le Pors-Chauvel As Deliverability Engineer

AMSTERDAM, NL 29th January 2023 – Postmastery, a renowned provider of email delivery solutions, is thrilled to announce the appointment of Yves-Marie Le Pors-Chauvel as its new Deliverability Engineer. With over 10 years of experience in the email industry, Yves-Marie brings a wealth of knowledge and expertise to Postmastery. He has gained unique insight while […]

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Categories: General, Postfix, PowerMTA

HTTP based APIs and webhooks in PowerMTA 5.0

The standard protocol for transferring email is SMTP and the MIME standard is used to encode emails before transfer. As the leading email delivery engine, PowerMTA’s implementation of SMTP is extremely robust and performant. It also supports the latest SMTP extensions for internationalisation, authentication and encryption. But SMTP and MIME do not communicate well with […]

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Categories: General, PowerMTA

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