InboxProof

InboxProof is a missed lead detection layer for WordPress forms.

SMTP plugins help WordPress send emails. InboxProof protects the leads when those emails fail.

The plugin captures supported form submissions, saves a safe copy in the WordPress admin, traces the outgoing notification email, and flags leads that may be at risk because no notification was created or WordPress reported an email failure.

InboxProof is not an SMTP plugin and does not replace WP Mail SMTP, FluentSMTP, Post SMTP, Easy WP SMTP, Mailgun, SendGrid, Brevo, Amazon SES, Gmail SMTP, or similar tools. It is designed to work alongside them.

Free Features

• Contact Form 7 submission capture.
• WPForms Lite submission capture.
• Lead Safe Inbox in wp-admin.
• Basic email logging through wp_mail hooks.
• Form-to-email trace matching.
• Probable matching when trace context is unavailable.
• Missing notification detection.
• Delayed missing-notification checks to reduce false positives.
• wp_mail success/failure status.
• Manual resend from the original email log or saved lead fallback.
• Basic SPF, DKIM, and DMARC checks.
• From-domain mismatch warning.
• Basic plugin detection.
• Dashboard widget.
• Search, filters, pagination, and bulk lead status actions.
• Privacy masking for likely sensitive fields.
• Configurable retention controls for saved leads, email logs, and history.

Privacy

InboxProof stores supported form submissions, related email log data, diagnostic results, and trace events in your WordPress database.

InboxProof can store email bodies to support resend/recovery. You can turn off email body storage in the plugin settings.

InboxProof can mask likely sensitive form fields, such as passwords, tokens, and card-like fields. This masking setting is enabled by default.

External Services

The free version of InboxProof does not send captured leads, email logs, diagnostic results, or plugin settings to any external service.

Support

For InboxProof support, email support@tazrinhossain.com.

If you installed InboxProof from WordPress.org, you can also use the plugin support forum.