# Install Exchange Module 

Install-Module -Name ExchangeOnlineManagement -RequiredVersion 3.2.0

# Connects to Exchange Online
Connect-ExchangeOnline

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#Common Commands:
Get-EXOMailbox | Select Displayname,PrimarySMTPAddress,RecipientType 

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# Get Size of all users mailbox 
Get-EXOMailbox | Get-ExoMailboxStatistics |select DisplayName,TotalItemSize

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# Get Mailbox Enabled Connection Types 
Get-EXOCASMailbox | Select PRimarySMTPAddress,OWAEnabled,ImapEnabled,PopEnabled,MAPIEnabled,EwsEnabled,ActiveSyncEnabled

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#Get Stats for Singe Mailbox
Get-MailboxStatistics -Identity Administrator | fl DisplayName, ItemCount, TotalItemSize, LastLogonTime

 

 

 

 

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#Get Stats for All Mailboxes 
Get-Mailbox | Get-Mailboxstatistics | Select Displayname,itemcount,totalitemsize,lastlogontime

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​#Get Mailbox Plan to See Exchange Settings 

Get-MailboxPlan -Identity ExchangeOnlineEnterprise | Select UserPrincipalName, RetainDeletedItemsFor,ArchiveQuota,ArchiveWarningQuota,ProhibitSendQuota,ProhibitSendReceiveQuota,RecoverableItemsQuota,RecoverableItemsWarningQuota,CalendarLoggingQuota,LitigationHoldDuration