General Insights on Email Infrastructure and Deliverability
Beyond 4xx & 5xx: The Truth About Email Bounces
2026/05/18 by Syed Alam.
At Postmastery, bounce analysis is part of our daily work. We process and analyse millions of bounce responses, and one pattern keeps coming back: many senders still rely on overly simple or inaccurate bounce classifications. The idea that “4xx means soft bounce” and “5xx means hard bounce” is easy to understand, but it does not […]
Categories: General
CNIL Recommendation on Email Tracking Pixels: What Changes and the Open Questions
2026/04/28 by Yves-Marie Le Pors-Chauvel.
A NOTE FOR INTERNATIONAL READERS The recommendation discussed in this article is a French regulatory initiative, issued by the CNIL, France’s data protection authority. At first glance, it may seem like a local compliance matter. It is not. Any sender, regardless of where they are established, who sends emails to recipients residing in France is […]
Categories: Deliverability, General
Postmastery on BFM Business (French TV) – Understanding Email Deliverability and Its Impact
2025/11/10 by Yves-Marie Le Pors-Chauvel.
We are proud to share that Postmastery was recently featured on BFM Business, in an interview hosted by Gilane Barret and produced in collaboration with OpenMedias. The goal of this interview was simple: explain who Postmastery is and make the often misunderstood topic of email deliverability accessible to everyone. Why talk about deliverability? Deliverability is […]
Postmastery to Attend M3AAWG 64 in Vancouver
2025/05/30 by Willem Stam.
Postmastery is excited to announce our participation in the upcoming M3AAWG 64th General Meeting, taking place from June 2–5, 2025, at the Hyatt Regency in Vancouver, Canada. This premier event brings together global experts in messaging, malware, and mobile security to collaborate on combating online abuse. The conference will feature a range of insightful sessions, […]
Categories: General
How Omeda Transformed Email Delivery with Postmastery
2025/05/23 by Willem Stam.
Omeda, a leading audience data platform, recently modernized its email infrastructure by partnering with Postmastery. Faced with growing email volumes and an aging internal system, Omeda made the strategic shift to PowerMTA, supported by Postmastery’s deep expertise in email delivery optimization. The results? Faster, more reliable delivery, crucial for time-sensitive communications, plus streamlined operations and […]
Categories: Case Studies, Deliverability, General, Solutions
Email Deliverability Summit Agenda
2025/04/18 by webmaster.
Day 1 – Thursday April 25 The first day of the Email Deliverability Summit is packed with insightful sessions, hands-on workshops, and deep dives into the ever-evolving world of email infrastructure and performance. Among a strong line-up of industry voices, we’re proud to see several of our Postmastery colleagues take the stage and share their […]
Categories: General
Postmaster Tools by Gmail: A Revolution in Deliverability Monitoring
2025/01/31 by Yves-Marie Le Pors-Chauvel.
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 […]