High Volume Email for Microsoft 365 Public Preview
From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Rollout
- Roadmap
- 382633
Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".
Schedule dates changed in the text
Date phrases in schedule sentences differ between the versions we saw- Seen 11 Oct 2024
early April 2024, late April 2024, late September 2024, early October 2024→ April 2024, September 2025, early October 2025
Read from date phrases in Microsoft's text, not from notice metadata. A changed phrase can be a moved rollout, a new milestone or just rewording; "What changed" below shows which.
What the notice says
Microsoft’s text, safely structuredUpdated October 11, 2024: Thank you for your interest! We have extended the public preview of this feature and will provide additional Message Center posts as General Availability approaches.
Exchange Online is designed with email sending limits that are determined by three key factors: Recipient Rate Limit, Recipient Limit, and Message Rate Limit. We’re excited to announce High Volume Email (HVE) for Microsoft 365, which caters to customers who have needs beyond these limits.
HVE uses a transactional model, where cost is based on the number of sent emails. During Public Preview, HVE is provided at no cost, and allows up to 100,000 recipients per day per customer. HVE is specifically designed for large-scale internal communications, seamlessly integrating with business applications and devices to facilitate mass mailing needs.
This message is associated with Microsoft 365 Roadmap ID 382633.
When this will happen
Preview: This feature has rolled out to Public Preview in April 2024.
Worldwide general availability: We will begin rolling out in September 2025 and expect to complete by early October 2025.
How this will affect your organization
A new page for HVE will appear under Mail Flow in the left-hand nav of the Exchange admin center. This page enables admins to create and manage Mail User accounts that are enabled for HVE. These accounts will use a dedicated SMTP endpoint for sending email using HVE.
Additionally, a new report for HVE will appear under Mail Flow Reports. The report provides an overview of HVE usage in your tenant, broken down by individual accounts. If more granular reporting is needed, an admin can request a more detailed report.
What you need to do to prepare
No action is needed to prepare for this change. You may consider updating your documentation as appropriate.
What changed
Between archive captures, newest first… associated with Microsoft 365 Roadmap ID 382633. When this will happen: Preview:
We will begin rollingThis feature has rolled outearly April 2024 and expecttocomplete by latePublic Preview in April2024 - We will not be proceeding with this change at this time. Worldwide:2024. Worldwide general availability: We will begin rolling outlatein September20242025 and expect to complete by early October2024 - We will not be proceeding with this change at this time.2025. How this will affect your organization: A new page for HVE will …Updated October
10,11, 2024:After further review weThank you for your interest! We havedecided not to proceed withextended the public preview of thischange at this time. We apologize for any inconvenience.feature and will provide additional Message Center posts as General Availability approaches. Exchange Online is designed with email sending limits that are determined by …Updated
April 9,October 10, 2024:WeAfter further review we haveupdated the content to show as intended. Thank youdecided not to proceed with this change at this time. We apologize foryour feedback.any inconvenience. Exchange Online is designed with email sending limits that are determined by … rolling out early April 2024 and expect to complete by late April2024.2024 - We will not be proceeding with this change at this time. Worldwide: We will begin rolling out late September 2024 and expect to complete by early October 2024 - We will not be proceeding with this change at this time. How this will affect your organization: A new page for HVE will …- Tags
New feature, Admin impact→ Updated message, New feature, Admin impact
Updated April 9, 2024: We have updated the content to show as intended. Thank you for your feedback. Exchange Online is designed with email sending limits that are determined by …
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