high volume email

Exchange Online’s High Volume Email feature has reached General Availability, marking an important shift for organizations that need to send large amounts of internal email from applications, devices, and line-of-business systems without tripping the familiar Exchange sending ceilings. Microsoft...

Microsoft’s Exchange team has announced a sweeping, tenant-level restriction that will limit outbound email sent from the shared onmicrosoft.com namespace (MOERA — Microsoft Online Email Routing Address) to 100 external recipients per organization per 24‑hour rolling window, and the change comes...

Microsoft is moving to strictly limit outbound email sent from the shared .onmicrosoft.com tenant namespace — commonly called MOERA (Microsoft Online Email Routing Address) — introducing a hard cap that will throttle messages sent from onmicrosoft.com addresses to 100 external recipients per...

Microsoft is imposing a hard limit on outgoing email from free “.onmicrosoft.com” (MOERA) tenant domains to combat widespread abuse and protect delivery for legitimate Microsoft 365 customers, and the change — which takes effect in staged waves starting October 15, 2025 for trials — restricts...

Organizations increasingly face the challenge of distributing vital information to vast internal audiences, whether via automated alerts, system notifications, or large-scale transactional communications. For enterprise IT teams running on Microsoft 365, the recent introduction of Exchange...

Microsoft has announced significant changes to its High Volume Email (HVE) service within Microsoft 365, extending support for Basic Authentication until September 2028. This extension aims to provide organizations with additional time to transition to more secure authentication methods, such as...

Microsoft’s recent announcement regarding significant changes to High Volume Email (HVE) within the Microsoft 365 ecosystem has sent ripples through the IT community, especially among organizations that rely heavily on email automation for communication both internally and externally. This newly...

For many enterprise IT leaders, the intersection of security and high-volume email workflows within Microsoft 365 represents a challenging balancing act. On one hand, organizations demand robust communications infrastructure for both internal and external use. On the other, the growing threat...

Microsoft has recently announced significant changes to its High Volume Email (HVE) service within Microsoft 365, alongside an extension of support for Basic Authentication until September 2028. These updates are designed to provide organizations with additional time to transition to more secure...