How can I send Outlook (Microsoft 365) meeting invitations from one email account to multiple email accounts using PowerShell?

Question

I need your help to create a PowerShell script to send invitations to an Outlook (Microsoft 365) meeting from an email account user@domino to multiple email accounts (user1@domino, user2@domino...) through from PowerShell I hope you can help me.

Answer 1

Hi JJ try this:

# Load the Outlook COM object
Add-Type -AssemblyName "Microsoft.Office.Interop.Outlook"
$outlook = New-Object -ComObject Outlook.Application
$namespace = $outlook.GetNamespace("MAPI")

# Get the account to send from
$account = $namespace.Accounts | Where-Object {$_.SmtpAddress -eq "user@domino"}

# Create a new appointment item
$appointment = $outlook.CreateItem(1) # 1 = olAppointmentItem

# Set the appointment properties
$appointment.Subject = "Meeting Subject"
$appointment.Body = "Meeting description goes here."
$appointment.Location = "Meeting Location"
$appointment.Start = (Get-Date).AddDays(1).AddHours(9) # Tomorrow at 9 AM
$appointment.Duration = 60 # Duration in minutes

# Add recipients
$recipients = @("user1@domino", "user2@domino", "user3@domino")
foreach ($recipient in $recipients) {
    $appointment.Recipients.Add($recipient)
}

# Set the sending account
$appointment.SendUsingAccount = $account

# Send the meeting invitation
$appointment.Send()

# Clean up
[System.Runtime.Interopservices.Marshal]::ReleaseComObject($outlook) | Out-Null
[System.GC]::Collect()
[System.GC]::WaitForPendingFinalizers()

---

This script does the following:

• Loads the Outlook COM object.
• Finds the specified sending account (user@domino).
• Creates a new appointment item.
• Sets the appointment properties (subject, body, location, start time, duration).
• Adds recipients to the appointment.
• Sets the sending account.
• Sends the meeting invitation.
• Cleans up the COM objects to prevent memory leaks.

P.S

Replace "user@domino" with the actual email address you want to send from. Modify the recipient list in the $recipients array. Adjust the appointment properties (subject, body, location, start time, duration) as needed.

Remember to run this script on a machine with Outlook installed and properly configured with the sending account.