Troubleshooting Failed Submissions in WPForms
The most common cause of "working" forms that silently fail to deliver notification emails isn't WPForms itself but WordPress's default mail function, which many hosts don't configure reliably for outbound email -- installing an SMTP plugin (like WP Mail SMTP) to route notifications through a proper email service resolves the majority of "form submits but I never get the email" reports. Caching plugins are another frequent culprit, since aggressive page caching can serve a stale cached version of a form page that doesn't process AJAX submissions correctly, particularly after a form has been edited.
Practical Details
Plugin or theme JavaScript conflicts (another plugin loading a conflicting version of jQuery, for example) can silently break form submission without an obvious error message, so temporarily disabling other plugins to isolate the conflict is a standard diagnostic step. reCAPTCHA or other spam-protection misconfiguration (wrong site key, expired credentials) is worth checking specifically if forms fail intermittently rather than consistently, since spam-protection failures often present as sporadic rather than total failures.
Actionable Considerations
- Install an SMTP plugin like WP Mail SMTP if notification emails aren't arriving, rather than assuming WPForms itself is broken
- Exclude form pages from aggressive caching, or clear cache after editing a form, to avoid serving a stale non-functional version
- Temporarily disable other plugins to isolate JavaScript conflicts if submissions fail without a clear error message