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

Current Warnings:
  • 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: