Getting email Notification Folder count - powershell

Question

With this powershell script i'm able get file count on inside a folder
Get-ChildItem D:\ -Recurse -File | Measure-Object | %{$_.Count}
here is the script sending email.
$Count = Get-ChildItem D:\ -Recurse -File | Measure-Object | %{$_.Count}
$Status= $Event.Message
$From = "sender#sender.com"
$To = "receiver"
$SMTPServer = "smtp"
$SMTPPort = "587"
$Username = "email#email.us"
$Password = "password"
$Subject = "$computer,Files count"
$Body = "Number of Files is $Count |D drive test "
$smtp = New-Object System.Net.Mail.SmtpClient($SMTPServer, $SMTPPort);
$smtp.EnableSSL = $false
$smtp.Credentials = New-Object System.Net.NetworkCredential($Username, $Password);
$smtp.Send($From, $To, $subject, $body);
$computer = "$env:computername
But the output is simply plain text Number of Files is 58 |D drive test
can we have it to alert us with some more text like If file count is mismatch it should consider a warning like "number of files is 60 which is large" or if it gets less it should be critical and error.

Answer 1

you have comparison operators:
-lt = lower than
-gt = greater than
-ge = greater or equal
-le = less or equal
-eq = equal
And you have if, elseif and else
with that you can change your body message (as suggested in the answer of DarkMoon)
if ($count -le '50') {
$Body = 'your text'
}
elseif (($count -gt '50') -and ($count -le '100')) {
$Body = 'your text'
}
elseif (($count -gt '100') -and ($count -le '500')) {
$Body = 'your text'
}
else {
$Body = 'your text'
}

Answer 2

For the warning, it'd be simply something along the lines of:
if ($Count -lt 60) {
$Body = "Number of Files is low at $Count |D drive test "
} else {
$Body = "Number of Files is $Count which is large |D drive test "
}