What are some potential reasons for emails not being delivered even when PHPMailer indicates successful sending?

One potential reason for emails not being delivered even when PHPMailer indicates successful sending is that the email may be getting caught in the recipient's spam filter. To avoid this, you can set the "From" address to a valid email address that is associated with the domain from which the email is being sent. This helps improve the email's deliverability. 

$mail = new PHPMailer;

$mail->setFrom('valid@example.com', 'Your Name');
$mail->addAddress('recipient@example.com', 'Recipient Name');
$mail->Subject = 'Subject of the email';
$mail->Body = 'Body of the email';

if(!$mail->send()) {
    echo 'Message could not be sent.';
    echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
    echo 'Message has been sent';
}

Keywords

PHPMailer SMTP email delivery spam folder DNS settings

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