Email Queue Processing Job #

Sends version release notification emails to customers.

Job Details #

What It Does #

1. Queries wp_dmsilm_us_email_queue for pending emails (status = pending, attempts < 3)
2. Sends up to [batch_size] emails using WordPress's wp_mail()
3. Marks successfully sent emails as "sent"
4. On failure: increments attempt counter and records the error message
5. After 3 failures: email is abandoned (no more retry)

When Emails Are Queued #

Emails enter the queue when you publish a version that has "Send Email Notification" checked AND global email notifications are enabled. One email row is created per active license holder for that product.

Monitoring the Queue #

The Update Server Stats dashboard widget shows the current pending queue count. A count of zero means all queued emails have been sent.

Troubleshooting #

If emails are not sending:

1. Verify WP-Cron is not disabled (DISABLE_WP_CRON in wp-config.php)
2. Check that WordPress can send email (Settings > System Status, or use WP Mail SMTP's test)
3. Check the email settings in DDLS > Settings > Update Server (is global email enabled? Is batch size > 0?)
4. If the queue count is not decreasing over 15-minute intervals, WP-Cron may not be running

Manually Triggering the Job #

You can manually trigger the email queue job by visiting your site's wp-cron.php URL, or by using WP CLI:

wp cron event run dmsilm_us_process_email_queue

Related Topics #

• Email Notification Settings
• Publishing a Version with Update Server
• Troubleshooting Email Issues