$NumberOfSnapshotsToReport = 5

$EmailFrom = "me@mymail.com"
$EmailTo = "you@yourmail.com" # Add multiple with "mail1", "mail2", "Mail3"
$Subject = "VMs with $NumberOfSnapshotsToReport or more snapshots" 
$SMTPServer = "smtp.mymailserver.com" 

Connect-VIServer 172.16.88.200 -User administrator@vsphere.local -Password VMware1!

Foreach ($VM in Get-VM) {
    $Snapshots = $VM | Get-Snapshot
    if ($Snapshots.count -ge $NumberOfSnapshotsToReport) {
        $Info = $Snapshots | Select -last 1 | Select VM, Name, Created, Description
        $Body += "$VM has $($Snapshots.Count) Snapshots, the last one was created on $($Info.Created) and was named $($Info.Name).`n`n"
    }
}

Send-MailMessage -SmtpServer $SMTPServer -From $EmailFrom -To $EmailTo -Subject $Subject -Body $Body