#################################################
# Please Configure the following variables….
# expireindays1 + 2 = At what count of days left on a password do you want a notification?
$smtpServer=”smtp.yourmailserver.com”
$expireindays1 = 7
$expireindays2 = 1
$from = “Name <name@yourmailserver.com>”
#################################################

#Get Users From AD who are enabled
Import-Module ActiveDirectory
$users = get-aduser -filter * -Properties enabled, passwordneverexpires, passwordexpired, emailaddress, passwordlastset |where {$_.Enabled -eq “True”} | where { $_.PasswordNeverExpires -eq $false } | where { $_.passwordexpired -eq $false }

foreach ($user in $users)
{
$Name = (Get-ADUser $user | foreach { $_.Name})
$emailaddress = $user.emailaddress
$passwordSetDate = (get-aduser $user -properties passwordlastset | foreach { $_.PasswordLastSet })
$PasswordPol = (Get-AduserResultantPasswordPolicy $user)
# Check for Fine Grained Password
if (($PasswordPol) -ne $null)
{
$maxPasswordAge = ($PasswordPol).MaxPasswordAge
}

else
{
$maxPasswordAge = (Get-ADDefaultDomainPasswordPolicy).MaxPasswordAge
}

$expireson = $passwordsetdate + $maxPasswordAge
$today = (get-date)
$daystoexpire = (New-TimeSpan -Start $today -End $Expireson).Days
$subject=”Your password will expire in $daystoExpire days”
$body =”
Dear $name,
<p> Your password will expire in $daystoexpire day(s).<br>
To change your password, do these things<br>
For remote password changes, sign in to this address and change it there’ <br>
<p>Thanks, <br> 
IT
</P>”

if (($daystoexpire -eq $expireindays1) -or ($daystoexpire -eq $expireindays2))
{
Send-Mailmessage -smtpServer $smtpServer -from $from -to $emailaddress -subject $subject -body $body -bodyasHTML -priority High

}

}