If any user faces any such issue, then we can help them manage their mailbox size limit. So, after using it for some time, Office 365 mailbox size gets exceeded and users are unable to send or receive data. Office 365 Business Essentials, Premium, and Enterprise E1 offer 50 GB of mailbox storage and many users have selected this plan only. This is because most of the users save most of their data on the cloud. One of the most common issues faced by Office 365 users is the Office 365 Mailbox Size Full alert messages.
