Commands › Exchange Online
Connect-Mailbox
Connect disconnected mailboxes to existing user accounts that don't already have mailboxes.
Quick start script
# Connect-Mailbox — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org
# 2. Run and inspect
Connect-Mailbox -Identity <StoreMailboxIdParameter> -Database <DatabaseIdParameter> -Equipment <SwitchParameter> | Format-List
# 3. Export for evidence / drift tracking
Connect-Mailbox | Export-Clixml .\Mailbox-$(Get-Date -Format yyyyMMdd).xml
Syntax — 6 parameter sets
Equipment
Connect-Mailbox [-Identity] <StoreMailboxIdParameter> [-Database] <DatabaseIdParameter> [-Equipment]
[-ActiveSyncMailboxPolicy <MailboxPolicyIdParameter>]
[-Alias <String>]
[-Confirm]
[-DomainController <Fqdn>]
[-Force]
[-ManagedFolderMailboxPolicy <MailboxPolicyIdParameter>]
[-ManagedFolderMailboxPolicyAllowed]
[-RetentionPolicy <MailboxPolicyIdParameter>]
[-User <UserIdParameter>]
[-WhatIf]
[<CommonParameters>]
Linked
Connect-Mailbox [-Identity] <StoreMailboxIdParameter> [-Database] <DatabaseIdParameter> -LinkedDomainController <Fqdn> -LinkedMasterAccount <UserIdParameter> [-LinkedCredential <PSCredential>]
[-ActiveSyncMailboxPolicy <MailboxPolicyIdParameter>]
[-Alias <String>]
[-Confirm]
[-DomainController <Fqdn>]
[-Force]
[-ManagedFolderMailboxPolicy <MailboxPolicyIdParameter>]
[-ManagedFolderMailboxPolicyAllowed]
[-RetentionPolicy <MailboxPolicyIdParameter>]
[-User <UserIdParameter>]
[-WhatIf]
[<CommonParameters>]
Room
Connect-Mailbox [-Identity] <StoreMailboxIdParameter> [-Database] <DatabaseIdParameter> [-Room]
[-ActiveSyncMailboxPolicy <MailboxPolicyIdParameter>]
[-Alias <String>]
[-Confirm]
[-DomainController <Fqdn>]
[-Force]
[-ManagedFolderMailboxPolicy <MailboxPolicyIdParameter>]
[-ManagedFolderMailboxPolicyAllowed]
[-RetentionPolicy <MailboxPolicyIdParameter>]
[-User <UserIdParameter>]
[-WhatIf]
[<CommonParameters>]
Shared
Connect-Mailbox [-Identity] <StoreMailboxIdParameter> [-Database] <DatabaseIdParameter> [-Shared]
[-ActiveSyncMailboxPolicy <MailboxPolicyIdParameter>]
[-Alias <String>]
[-Confirm]
[-DomainController <Fqdn>]
[-Force]
[-ManagedFolderMailboxPolicy <MailboxPolicyIdParameter>]
[-ManagedFolderMailboxPolicyAllowed]
[-RetentionPolicy <MailboxPolicyIdParameter>]
[-User <UserIdParameter>]
[-WhatIf]
[<CommonParameters>]
2 more parameter sets — see the parameter table below.
Parameters (22)
Reference facts derived from Microsoft documentation, © Microsoft, licensed CC BY 4.0; restructured with original guidance by serv365.ai.