The BoldGrid Backup plugin email notifications use phpMail with no authentication when delivering emails if SMTP is not configured. Security practices for hosting servers often block unauthorized emails delivered with phpMail. To prevent this, it is recommended that you use SMTP authentication to make sure that your notifications are delivered.
Email Format used by the BoldGrid Backup
The BoldGrid Backup plugin uses the following format for its notification emails:
`$headers = 'From: ' . $site_title . '<' . $admin_email . '>' . "\r\n" . 'X-Mailer: PHP/' . phpversion() . "\r\n"; $status = wp_mail( $admin_email, $subject, $body, $headers );`
The email notification does pass the admin email as the “From” address.
Recommendations for Using SMTP Notification
Though the phpMail option for sending notifications does work, it unfortunately was made before security issues were as much of a concern as they are at this time. Most mail servers now require SMTP authentication in order for mail to be properly delivered. If you configure SMTP authentication on your WordPress site, then there is a much better chance that the email notifications will not be blocked. Here are a few plugins that you can apply to WordPress in order to use SMTP authentication:
You now have enough information to help prevent your BoldGrid Backup notifications from being blocked due to lack of authentication.