IsSMTP(); $mailer->Host = 'mail.carixin.com'; // your SMTP host $mailer->Port = 587; // or 465 $mailer->SMTPAuth = true; $mailer->Username = 'contact@carixin.com'; $mailer->Password = 'carixin@2025'; $mailer->SMTPSecure = 'tls'; // or 'ssl' $mailer->From = 'contact@carixin.com'; $mailer->FromName = 'ERP Test'; $mailer->AddAddress('souldibachir3150@gmail.com', 'Admin'); $mailer->Subject = 'SMTP Test from Vtiger'; $mailer->Body = 'If you see this email, SMTP works!'; $mailer->SMTPDebug = 2; $mailer->Debugoutput = 'html'; $mailer->Send(); if ($mailer->Send()) { echo "✅ Mail sent successfully!"; } else { echo "❌ Mail failed: " . $mailer->ErrorInfo; }