In our 2024 review of Microsoft 365, we consider some of the major technical advances that occured in Microsoft's cloud ecosystem in 2024 together with some upcoming changes that have the potential to affect tenant operations. As always, our choice of what's important and what's not might not match yours, so feel free to comment and voice your opinion.
If you're looking for an email service capable of handling large volumes of email to external recipients, Microsoft will propose Email Communication Services (ECS). Built on top of Exchange Online, ECS shares some characteristics with the High Volume Email (HVE) solution. After testing both, HVE is probably a better solution if you have a Microsoft 365 tenant.
The Exchange Online High-Volume Email (HVE) solution handles up to 100,000 internal messages and 2,000 external messages daily. It's intended to replace on-premises Exchange servers that organizations keep just to service email submission from devices and applications. In this review of the preview version, we discovered that almost everything works just fine, if you keep within the throttling limits.
