Assistance with Mautic Email Sending Issue: Emails Logged as Sent but Not Received

My software

  • My Mautic version is: 4.4.9
  • My PHP version is: 7.4.33
  • My Database type and version is: MariaDB 10.5

My problem

  • My problem is:
    I’m using Mautic on a VPS integrated with my WordPress site via the WP Mautic plugin. On my “Launching Soon” page, there’s a form where users can enter their email address. The form successfully passes the email address to Mautic, and I’ve configured Mautic to send a follow-up email containing a discount code upon form submission.

    However, while Mautic logs indicate that the email was sent successfully (and even marked as “read” in the stats), the email never arrives in the recipient’s inbox. I have verified that the email isn’t landing in the spam/junk folder.


These errors are showing in the log:

  • I’m not seeing any critical errors in the Mautic logs related to this issue, but here is what I found:

    1. [CRON] Mautic is not set to queue email.
    2. [CRON] Messages sent: 0
    3. [CRON] No mailboxes are configured.

    In the browser’s Developer Tools, I also noticed an accessibility-related warning:
    Blocked aria-hidden on an element because its descendant retained focus.
    This appears on a hidden modal, but I’m unsure if it is relevant.


Steps I have tried to fix the problem:

  1. Verified the SMTP settings in Mautic under Settings > Email Settings to ensure proper configuration.
  2. Confirmed that the form successfully sends data to Mautic and triggers the email.
  3. Checked browser Developer Tools and found no failed network requests or console errors during the form submission.
  4. Reviewed the Mautic logs for email-related issues but found no clear indication of what is causing the emails not to reach the inbox.
  5. Tested the process with multiple email addresses from different providers (e.g., Gmail, Yahoo) to rule out provider-specific issues.

Any insights or suggestions on how to ensure the emails are delivered would be greatly appreciated!

If Mautic report the email being sent, then the problem is probably at your SMTP server.

Have you tried sending an email using a terminal?
What does your SMTP server have to say about all that?