**Installer les outils Exchange ExchangeOnlineManagement**

<codify powershell> Install-Module -Name ExchangeOnlineManagement
Import-Module ExchangeOnlineManagement </codify>

**Pour se connecter au tenant en powershell**
 
<codify powershell>Connect-ExchangeOnline -UserPrincipalName admin@mon-domaine.fr</codify>
 
**Forcer la politique de rétention et d'archivage**
 
<codify powershell>Commande 1 => $Mailboxes = Get-Mailbox -ResultSize Unlimited -Filter {RecipientTypeDetails -eq "UserMailbox"}
Commande 2 => $Mailboxes.Identity | Start-ManagedFolderAssistant</codify>
 
**Activer une BAL archive**

<codify powershell>Enable-Mailbox -Identity <username> -Archive</codify>
 
**Désactiver une BAL archive**

<codify powershell>Disable-Mailbox -Identity <username> -Archive</codify>
 
**Donner des droits sur un calendrier**

<codify powershell>Add-MailboxFolderPermission -Identity "nom de la ressource:\Calendrier" -User "nom de l'utilisateur" -AccessRights Editor
#Example
Add-MailboxFolderPermission -Identity "name-of-ressource:\Calendrier" -User t.user -AccessRights PublishingEditor
#Verifier les droits sur le calendrier
Get-MailboxFolderPermission -Identity "name-of-ressource:\Calendrier"
#Enlever des droits : 
Remove-MailboxFolderPermission -Identity "name-of-ressource:\Calendar" -User t.user</codify>

 
**Lister l'usage des BALs utilisateurs**

<codify powershell>Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Select DisplayName, TotalItemSize, ItemCount,DeletedItemCount | Export-csv -Path C:\Users\**t.user**\Desktop\Usage_BAL.csv</codify>
 
**Lister l'usage des BALs utilisateurs**

<codify powershell>Get-Mailbox -Identity "users"  | Get-MailboxStatistics| Select DisplayName, TotalItemSize, ItemCount,DeletedItemCount | Export-csv -Path C:\Users\**t.user**\Desktop\Usage_BAL.csv</codify>
 
**Voir la taille de la corbeille**

<codify powershell>get-mailboxfolderstatistics -Identity "User" -FolderScope deleteditems  | Select-Object itemsinfolder, foldersize</codify>