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