Microsoft 365开发：如何通过Graph Powershell推动密码过期邮件提醒

Install-Module Microsoft.Graph

Connect-MgGraph -Scopes "User.Read.All", "Mail.Send"
$NotificationThreshold = 7
$PasswordExpiryThreshold = 90 #By default 90 days Password expiry
$AllUsers = Get-MgUser -All -Property Id, DisplayName, UserPrincipalName,Mail,UserType, AccountEnabled,PasswordPolicies,lastPasswordChangeDateTime
ForEach ($User in $AllUsers)
{
    If (!$User.AccountEnabled -or $User.PasswordPolicies -contains "xDisablePasswordExpiration" -or $User.userType -eq "Guest") {
        continue
    }
    $PasswordExpiryDate = $User.lastPasswordChangeDateTime.AddDays($PasswordExpiryThreshold)
    $RemainingDays = ($PasswordExpiryDate - (Get-Date)).Days
    If ($RemainingDays -le $NotificationThreshold) {
        $EmailBody = "
            Hello $($User.DisplayName),
            


            Your Office 365 password will expire in $remainingDays days. Please change your password before it expires to avoid any disruption in accessing your account.
            


            To change your password, follow these steps:

            

            
Sign in to Office 365 (https://www.office.com)
            
Click on your profile picture in the top right corner.
            
Select 'View account'.
            
 Click 'Password'.
            
 Follow the instructions to change your password.
            
            

            Thank you,

            IT Support Team
        "
    $MailParams = @{
        Message = @{
            Subject = "Your Office 365 password will expire soon"
            Importance = "High"
            Body = @{
                ContentType = "html"
                Content = $EmailBody
            }
            ToRecipients = @(
                @{
                    EmailAddress = @{
                        Address = $User.Mail
                    }
                }
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        }
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    Send-MgUserMail -UserId $User.Mail -BodyParameter $MailParams
    }
}