Hello Dave,
Thank you for reaching out to us.
Currently, the Form Builder block in SP Page Builder does not provide a built-in log file to track or review form submission errors.
If the form emails are sometimes not being sent, the issue is usually related to the server’s email configuration (such as PHP mail settings, SMTP configuration, or hosting restrictions). We recommend checking your server mail settings or configuring SMTP to ensure more reliable email delivery.
You may also contact your hosting provider to review the server mail logs, as they may be able to identify why some emails are not being delivered.
Thank you for your understanding.
Best regards,