Change Primary SMTP Address for Bulk O365 Users

Articles on: Microsoft 365

Change Primary SMTP Address for Bulk O365 Users

Requirements:

• CSV File

• Powershell

• O365 Global Administrator Account

• Accepted O365 Domain

Procedure:

• Step 1. Connect to O365 using PowerShel

• Step 2. Create your CSV File with the following values.

• Connect office365:

• Run the following command in PowerShell

 $csv = Import-Csv C:\Users\malik\Desktop\emailchange.csv foreach ($line in $csv)
{ $SMTP ="SMTP:"+$line.AliasEmailaddress
Set-Mailbox -Identity $line.User -EmailAddresses $SMTP -WindowsEmailAddress $line.AliasEmailaddress }

Updated on: 31/01/2023

Updated on: 01/07/2024