Get-MailboxProperties

Exchange Online: Gets mailbox properties for a specified mailbox

Script

#Requires -Version 5.1

[CmdletBinding()]
Param(
    [Parameter(Mandatory = $true)]
    [string]$MailboxId,
    [ValidateSet('*','DisplayName','FirstName','LastName','Office','Phone','WindowsEmailAddress','AccountDisabled','DistinguishedName','Alias','Guid','ResetPasswordOnNextLogon','UserPrincipalName')]
    [string[]]$Properties = @('DisplayName','FirstName','LastName','Office','Phone','WindowsEmailAddress','AccountDisabled','DistinguishedName','Alias','Guid','ResetPasswordOnNextLogon','UserPrincipalName')
)

Process {
    try {
        $result = Get-Mailbox -Identity $MailboxId -ErrorAction Stop | Select-Object $Properties
        if ($null -eq $result) {
            throw "Mailbox $($MailboxId) not found"
        }
        $result | ForEach-Object {
            $_ | Add-Member -NotePropertyName Timestamp -NotePropertyValue (Get-Date -Format "yyyy-MM-dd HH:mm:ss") -PassThru -Force
        }
    }
    catch { throw }
}

Customize

MailboxId string

Alias, Display name, Distinguished name, SamAccountName, Guid or user principal name of the mailbox

Properties string

List of properties to expand. Use * for all properties