WPForms not sending email notifications — three ways leads vanish quietly

Short summary

The article identifies three WPForms-specific failure modes where visitors see a success message but notifications never arrive: spam filtering silently blocking legitimate entries, the Optimize Email Sending queue stalling on broken WP-Cron, and Lite version having no database fallback when email delivery fails. It also covers generic SMTP issues and warns that email logs showing 'Sent' only confirm handoff, not delivery. For agencies, clients on Lite may have lost enquiries entirely with no record.

• •Spam filtering can silently swallow legitimate submissions—entries land in WordPress spam with no notification sent
• •Optimize Email Sending queues notifications via WP-Cron, which can stall on low-traffic sites
• •WPForms Lite stores no database copy; if email fails, the enquiry is gone with no trace

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