Get-MailboxStatistics - How to Get Mailbox Size - Easy365Manager

Use the Get-MailboxStatistics PowerShell CmdLet to retrieve mailbox size, item count, and more from a single or multiple mailboxes.

Find Office 365 Mailbox Size With PowerShell

How to get mailbox size reports using powershell

Azure Archives - Easy365Manager

Get Exchange Online Mailbox Size in GB - Scripting Blog [archived]

Get mailbox size of all users in Exchange with PowerShell - ALI TAJRAN

Get mailbox size of all users in Exchange with PowerShell - ALI TAJRAN

Export Microsoft 365 mailbox size report with PowerShell - o365info

Office 365 Mailbox Size Report with PowerShell — LazyAdmin

Mailbox Size and Quotas in Exchange 2019/2016 and Microsoft 365