Office 365, Email, Exchange, What is my Mailbox Size Limit?
What is my Mailbox Size Limit
Mailboxes for Users on the Exchange system have a hard limit of 100GB
- 98GB: Warning regarding Inbox Size
- 99GB: Unable to Send Email
- 100GB: Unable to Send and Receive Email
For more information regarding Exchange Online Limits please check out this document: https://docs.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-limits