Microsoft 365 Business Basic, Business Standard, and Business Premium now include an additional 50 GB of primary email storage for eligible users. This brings the supported primary mailbox entitlemen...
Updated Aug 19, 2026
Version 3.0
Blog Post
4 MIN READ
Understanding the new 100 GB mailbox entitlement for Microsoft 365 Business suites
What about the archive ? The exchange plan 2 upgraded the mailbox size and the archive to 100GB. It's the same with this upgrade ?
Nino_Bilic
Microsoft
MicrosoftThis change is about the primary mailbox quota / size change, not archive (there was no change in archive sizing announced).