WordPress at a glance
function is not described

PHPMailer\PHPMailer

SMTP::setVerp() public WP 1.0

Enable or disable VERP address generation.

{} It's a method of the class: SMTP{}

No Hooks.

Return

null. Nothing.

Usage

$SMTP = new SMTP();
$SMTP->setVerp( $enabled );
$enabled *(true false)*

Code of SMTP::setVerp() WP 5.7.2

<?php
public function setVerp($enabled = false)
{
    $this->do_verp = $enabled;
}