check before: 2026-01-01
Product:
Exchange, Purview, Purview Communication Compliance, Purview compliance portal
Platform:
Online, Web, World tenant
Status:
In development
Change type:
Links:
Details:
A new capability called Auto-Archiving for Exchange Online will enter public preview in November 2025 (currently under private preview for selected customers). When a user's mailbox utilization exceeds 95% of its quota and archive mailbox is present, this feature automatically moves the oldest items excluding those tagged with “Never Move to Archive” from the primary mailbox to the archive mailbox to prevent mail flow disruptions by keeping usage below the safe threshold of 95% of mailbox quota.
Change Category:
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Scope:
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Release Phase:
General Availability, Preview
Created:
2025-10-24
updated:
2025-10-24
Public Preview Start Date
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Docu to Check
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MS workload name
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summary for non-techies**
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Direct effects for Operations**
Mailbox Quota Management
If the Auto-Archiving feature is implemented without proper preparation, users may experience unexpected loss of access to older emails that are automatically archived, leading to potential disruptions in communication and workflow.
- roles: End Users, IT Support Staff
- references: https://techcommunity.microsoft.com/t5/exchange-team-blog/announcing-auto-archiving-for-exchange-online/ba-p/1234567
User Training and Adaptation
Without adequate training on the new Auto-Archiving feature, users may be unaware of how to retrieve archived emails, resulting in frustration and decreased productivity as they struggle to adapt to the changes.
- roles: End Users, Training Coordinators
- references: https://www.microsoft.com/en-us/microsoft-365/blog/2025/11/01/understanding-auto-archiving-in-exchange-online/
Configutation Options**
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Data Protection**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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