List all SMTP addresses with PowerShell

Get-Recipient -ResultSize Unlimited | Select-Object DisplayName,PrimarySmtpAddress, @{Name="EmailAddresses";Expression={($_.EmailAddresses | Where-Object {$_ -clike "smtp*"} | ForEach-Object {$_ -replace "smtp:",""}) -join ","}} | Sort-Object DisplayName | Out-GridView

Kaynak: https://www.alitajran.com/list-all-smtp-addresses-with-powershell/