Change Primary SMTP Address for Bulk O365 Users

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