Set-ExMailboxMaxSize

SYNOPSIS

Set maximum mailbox size for specified mailboxes.

SYNTAX

Identity (Default)

Set-ExMailboxMaxSize [[-Identity] <string[]>] [-GenerateCmdlets]
 [-OutputFile <string>] [-WhatIf] [-Confirm]

ByDomain

Set-ExMailboxMaxSize -ByDomain <string> [-GenerateCmdlets]
 [-OutputFile <string>] [-WhatIf] [-Confirm]

FromCSV

Set-ExMailboxMaxSize -FromCSV <string> [-GenerateCmdlets] [-OutputFile <string>]
 [-WhatIf] [-Confirm]

AllMailboxes

Set-ExMailboxMaxSize -AllMailboxes [-GenerateCmdlets] [-OutputFile <string>]
 [-WhatIf] [-Confirm]

DESCRIPTION

This function sets the maximum mailbox size (MaxReceiveSize and MaxSendSize) for Exchange Online mailboxes. It can target mailboxes by identity, by domain, from a CSV file, or all mailboxes in the organization.

EXAMPLES

EXAMPLE 1

Set-ExMailboxMaxSize -Identity "user@example.com"

Sets the maximum mailbox size for the specified mailbox.

EXAMPLE 2

Set-ExMailboxMaxSize -ByDomain "example.com"

Sets the maximum mailbox size for all mailboxes in the specified domain.

EXAMPLE 3

Set-ExMailboxMaxSize -AllMailboxes

Sets the maximum mailbox size for all mailboxes in the organization.

EXAMPLE 4

Set-ExMailboxMaxSize -FromCSV "C:\path\to\file.csv"

Sets the maximum mailbox size for mailboxes listed in the specified CSV file.

EXAMPLE 5

Set-ExMailboxMaxSize -ByDomain "example.com" -GenerateCmdlets -OutputFile "C:\path\to\commands.ps1"

Generates the Set-Mailbox cmdlets for all mailboxes in the specified domain and saves them to the specified file without executing them.

PARAMETERS

-AllMailboxes

If specified, all mailboxes in the organization will be processed.

Type: System.Management.Automation.SwitchParameter
DefaultValue: False
SupportsWildcards: false
Aliases: []
ParameterSets:
- Name: AllMailboxes
  Position: Named
  IsRequired: true
  ValueFromPipeline: false
  ValueFromPipelineByPropertyName: false
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

-ByDomain

Filter mailboxes by domain name. All mailboxes with a primary SMTP address in this domain will be processed.

Type: System.String
DefaultValue: ''
SupportsWildcards: false
Aliases: []
ParameterSets:
- Name: ByDomain
  Position: Named
  IsRequired: true
  ValueFromPipeline: false
  ValueFromPipelineByPropertyName: false
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

-Confirm

Prompts you for confirmation before running the cmdlet.

Type: System.Management.Automation.SwitchParameter
DefaultValue: ''
SupportsWildcards: false
Aliases:
- cf
ParameterSets:
- Name: (All)
  Position: Named
  IsRequired: false
  ValueFromPipeline: false
  ValueFromPipelineByPropertyName: false
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

-FromCSV

The path to a CSV file with a PrimarySmtpAddress column. All rows are validated and resolved before any change.

Type: System.String
DefaultValue: ''
SupportsWildcards: false
Aliases: []
ParameterSets:
- Name: FromCSV
  Position: Named
  IsRequired: true
  ValueFromPipeline: false
  ValueFromPipelineByPropertyName: false
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

-GenerateCmdlets

If specified, the function will generate the cmdlets and save them to a file instead of executing them.

Type: System.Management.Automation.SwitchParameter
DefaultValue: False
SupportsWildcards: false
Aliases: []
ParameterSets:
- Name: (All)
  Position: Named
  IsRequired: false
  ValueFromPipeline: false
  ValueFromPipelineByPropertyName: false
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

-Identity

The identity of the mailbox(es) to set the maximum size for. This can be an array of email addresses, usernames, or display names.

Type: System.String[]
DefaultValue: ''
SupportsWildcards: false
Aliases: []
ParameterSets:
- Name: Identity
  Position: 0
  IsRequired: false
  ValueFromPipeline: true
  ValueFromPipelineByPropertyName: true
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

-OutputFile

The path to the output file where generated cmdlets will be saved. Default is a timestamped file in the current directory.

Type: System.String
DefaultValue: "\"$(Get-Date -Format 'yyyy-MM-dd_HHmmss')-SetExMailboxMaxSize-Commands.ps1\""
SupportsWildcards: false
Aliases: []
ParameterSets:
- Name: (All)
  Position: Named
  IsRequired: false
  ValueFromPipeline: false
  ValueFromPipelineByPropertyName: false
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

-WhatIf

Runs the command in a mode that only reports what would happen without performing the actions.

Type: System.Management.Automation.SwitchParameter
DefaultValue: ''
SupportsWildcards: false
Aliases:
- wi
ParameterSets:
- Name: (All)
  Position: Named
  IsRequired: false
  ValueFromPipeline: false
  ValueFromPipelineByPropertyName: false
  ValueFromRemainingArguments: false
DontShow: false
AcceptedValues: []
HelpMessage: ''

CommonParameters

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.

Getting started

Azure

Entra

Exchange

Intune

M365 Apps

Misc

MS Commerce

Share Point

Unified Logs

Set-ExMailboxMaxSize

Set-ExMailboxMaxSize

SYNOPSIS

SYNTAX

Identity (Default)

ByDomain

FromCSV

AllMailboxes

DESCRIPTION

EXAMPLES

EXAMPLE 1

EXAMPLE 2

EXAMPLE 3

EXAMPLE 4

EXAMPLE 5

PARAMETERS

-AllMailboxes

-ByDomain

-Confirm

-FromCSV

-GenerateCmdlets

-Identity

-OutputFile

-WhatIf

CommonParameters

INPUTS

System.String[]

OUTPUTS

NOTES

​Set-ExMailboxMaxSize

​SYNOPSIS

​SYNTAX

​Identity (Default)

​ByDomain

​FromCSV

​AllMailboxes

​DESCRIPTION

​EXAMPLES

​EXAMPLE 1

​EXAMPLE 2

​EXAMPLE 3

​EXAMPLE 4

​EXAMPLE 5

​PARAMETERS

​-AllMailboxes

​-ByDomain

​-Confirm

​-FromCSV

​-GenerateCmdlets

​-Identity

​-OutputFile

​-WhatIf

​CommonParameters

​INPUTS

​System.String[]

​OUTPUTS

​NOTES

​RELATED LINKS

Set-ExMailboxMaxSize

SYNOPSIS

SYNTAX

Identity (Default)

ByDomain

FromCSV

AllMailboxes

DESCRIPTION

EXAMPLES

EXAMPLE 1

EXAMPLE 2

EXAMPLE 3

EXAMPLE 4

EXAMPLE 5

PARAMETERS

-AllMailboxes

-ByDomain

-Confirm

-FromCSV

-GenerateCmdlets

-Identity

-OutputFile

-WhatIf

CommonParameters

INPUTS

System.String[]

OUTPUTS

NOTES

RELATED LINKS