PHPMailer\PHPMailer

SMTP::setVerp │ public │ WP 1.0

Enable or disable VERP address generation.

Method of the class: SMTP{}

No Hooks.

Returns

null. Nothing (null).

Usage

$SMTP = new SMTP();
$SMTP->setVerp( $enabled );
$enabled(true|false)
.
Default: false

SMTP::setVerp() code WP 7.0.2

wp-includes/PHPMailer/SMTP.php 
public function setVerp($enabled = false)
{
    $this->do_verp = $enabled;
}