The Postmastery Blog: Insights, Tools & Best Practices for Email Deliverability

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

GivingTuesday 2024: Record-Breaking Email Campaigns with Engaging Networks

GivingTuesday is a key date for nonprofits and charities to engage supporters and drive crucial fundraising efforts. For many organisations, it’s one of the busiest days of the year, requiring platforms like Engaging Networks to scale efficiently to handle massive email volumes. In 2024, Engaging Networks rose to the challenge, delivering record-breaking results through careful […]

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Categories: Case Studies, Deliverability, General

Explore Postmastery’s New YouTube Channel Featuring Highlights from the Postmastery Day 2024 & EMAS.

We are pretty excited to announce the launch of Postmastery’s brand new YouTube channel, what we hope will be a hub for insightful and engaging content on email deliverability. Our first uploads feature sessions from the very first Postmastery Day at the Deliverability Summit, held at The Rosarium in Amsterdam on April 11, 2024. This […]

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Categories: Authentication, General

All the bounce we cannot see: A Deferral story

When we work in email deliverability, we constantly hear about the processing of bounces, sometimes about blocking bounces and more often about suppressing bounces… In short, as you will have understood, processing bounces is the absolute prerequisite to email deliverability … But then, what about Deferrals… Should we process them? And if yes, how? What […]

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Categories: Authentication, Deliverability, Deliverability

Enhancing Email Deliverability with Yahoo Sender Hub

In the ever-evolving landscape of email marketing, ensuring that your messages reach the intended recipients’ inboxes is paramount. Enter Yahoo Sender Hub, a platform designed to help email marketers and organizations optimize their email deliverability to Yahoo Mail users. Let’s explore what Yahoo Sender Hub is and what are its key features. What is Yahoo […]

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Categories: Deliverability, General, ISP

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