$recipients = @(`
"email1@lol.com", `
"email2.@lol.com"
)

$EmailFrom = "spam@gmail.com"
$Subject = "Test"
$Body = "Test Body"
$SMTPServer = "192.168.1.4"

$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587)
#Pour SSL ou STARTTLS
$SMTPClient.EnableSsl = 1
$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("user", "pass")

$SMTPMessage = New-Object System.Net.Mail.MailMessage
$SMTPMessage.From = $EmailFrom
$SMTPMessage.Subject = $Subject
$SMTPMessage.Body = $Body

foreach ($EmailTo in $recipients)
{
	$SMTPMessage.To.Add($EmailTo)
	$SMTPClient.Send($SMTPMessage)
	$SMTPMessage.To.Clear() = $EmailTo
}