Import-module activedirectory
Import-Module MSOnline

$Username = "admin@yourdomain.edu"
$Password = ConvertTo-SecureString ‘YourPassword’ -AsPlainText -Force
$LiveCred = New-Object System.Management.Automation.PSCredential $Username, $Password
$senderemail="noreply@demo.com"
$subject="Your Direct Reports and Permission"

$managerusers = Get-ADGroupMember -identity "Test_Department_Manager" | Select-Object SamAccountName, EmailAddress

Foreach ($manager in $managerusers)
 {
	# Find all direct user reporting to manager
	$directreportusers = Get-ADuser $manager -property directreports | select SamAccountName
	$manageremail = (Get-ADUser $manager -Properties Mail).Mail

	Foreach ($user in $directreportusers)
		{

		$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $LiveCred -Authentication Basic -AllowRedirection
		Import-PSSession $Session

		$email=$user.Mail

		$permission=Get-MailboxPermission -Identity $email


		$cred = $LiveCred
		$body = $permission
		Send-MailMessage -To $manageremail -from $senderemail -Subject $subject -Body $body -BodyAsHtml -smtpserver smtp.office365.com -usessl -Credential $cred -Port 587

		Remove-PSSession $Session

		}


 }