2025/06/20 by Yves-Marie Le Pors-Chauvel.
Outlook Deliverability: A Silent Shift with Serious Consequences
Starting on June 17th, 2025 at 11:10 UTC, multiple high-volume senders – particularly in France – began experiencing a sudden surge in DKIM failures on emails sent to Microsoft domains (Outlook, Hotmail, etc.). These bounces occurred even though SPF and DMARC were properly configured. What We’ve Observed Our engineers quickly identified the root cause: a […]
Categories: Authentication, Deliverability, Providers
2025/05/30 by Willem Stam.
Postmastery to Attend M3AAWG 64 in Vancouver
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
2025/05/23 by Willem Stam.
How Omeda Transformed Email Delivery with Postmastery
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