Replace email domain for the guest accounts in Azure AD - azure-powershell

Question

I am looking to replace email domain (suffix after #) for the guest users in Azure AD via Powershell. As an example, i need to change email address for jdoe from jdoe#abc to #jdoe.xyz
I tried below command but it is not working.
Get-AzureADUser | where {$.UserType -eq 'Guest' -and $.mail -match "#abc.com"} |
ForEach-Object { Set-AzureADUser -ObjectId $($_.ObjectId) -MailNickName "abc#xyz" }
The above might be an incomplete command. Someone suggest what would be the right approach here?

Answer 1

I tried to reproduce the same in my environment to Replace email domain for the guest accounts in Azure AD using Powershell:
To change the email domain for user accounts that have the account type "guest" in Azure Ad using Powershell, you can use below script.
Connect to Azure AD using connect-AzureAd cmdlet.
Use the below cmdlet to retrieve the user accounts the have account type "guest"
Get-AzureAdUser -Filter "accountEnabled eq true and userType eq'Guest'"
Full PowerShell Script
Install-Module AzureAD
Connect-AzureAD
$guestAccounts = Get-AzureAdUser -Filter "accountEnabled eq true and userType eq 'Guest'"
foreach ($guestAccount in $guestAccounts) {
$newUPN = $guestAccount.UserPrincipalName.Replace("#olddomain.com","#newdomain.com")
Set-AzureADUser -ObjectId $guestAccount.ObjectId -UserPrincipalName $newUPN
}
Get-AzureAdUser -Filter "accountEnabled eq true and userType eq 'Guest'"
User UserPrincipal domain changed successfully.