Available on WordPress, Shopify & Wix

Not just spam protection.
Lead protection.

InboxShield is a contact form spam protection plugin that filters junk inquiries in context, protects real leads, and learns what matters to your business — on WordPress, Shopify, and Wix.

Free Plan Available
No Credit Card Required
GDPR Compliant
No PII Sent to AI

More than a spam blocker plugin

Traditional spam protection blocks bots and keywords. InboxShield goes further — it understands your business context and filters the junk inquiries that slip through everything else.

Understands Your Business

A catering inquiry is legitimate for a restaurant but junk for a law firm. InboxShield knows the difference because it understands what your site actually does.

Filters Junk, Not Just Bots

CAPTCHAs stop bots. But what about SEO pitches, link exchange requests, and irrelevant inquiries? InboxShield catches what other tools miss.

Protects Real Leads

Every blocked message is a potential customer lost. InboxShield scores leads so you focus on the messages that matter — and never miss a real opportunity.

Learns From Your Feedback

Mark a correction and InboxShield remembers. It builds sender reputation, learns your preferences, and gets smarter with every decision you make.

One mission. Three platforms.

InboxShield is built natively for each platform — same mission, tailored experience.

Live

Shopify

Rule-based filtering. Works with every theme.

  • Keyword & link blocking
  • Disposable email detection
  • Repeat submission blocking
  • Message dashboard
  • Free: 50 msgs/mo
Install on Shopify
Live

Wix

Smart filtering for Wix Forms. No theme changes.

  • Hooks into Wix Forms directly
  • Keyword & link blocking
  • Sender reputation tracking
  • Message dashboard
  • Free: 50 msgs/mo
Install on Wix

Form spam prevention that goes beyond blocking bots

Every feature is designed to help you see fewer junk messages and never miss a real customer.

Multi-Layer Spam Engine

Bot defense, keyword matching, link detection, disposable emails, honeypot fields, and repeat submission blocking — all before AI is even needed.

Context-Aware Classification

InboxShield scans your website, understands your business, and classifies each message in context. AI is optional and only used for uncertain cases.

Lead Scoring

Hot, warm, neutral, or cold — InboxShield scores every lead so you focus on the ones that matter and never miss a real opportunity.

Explainable Decisions

Every blocked or approved message comes with a clear reason. No black box — you always know why a message was filtered.

Feedback Learning

Mark corrections and InboxShield learns from your feedback. Sender reputation, topic preferences, and patterns improve over time.

Quick Setup

Install from WordPress.org, Shopify App Store, or Wix App Market. No coding required — protection starts immediately.

Frequently asked questions

Everything you need to know about InboxShield.

Most spam tools block bots and known spammers using global databases. InboxShield goes further — it understands your specific business context and filters irrelevant inquiries, not just spam. An SEO pitch is legitimate email, but if you're a restaurant, it's noise. InboxShield knows the difference.
InboxShield is available on WordPress (plugin), Shopify (app), and Wix (app). The WordPress version is the most advanced with AI classification and 9 form plugin support. Shopify and Wix use rule-based filtering with the same core protection.
On WordPress, AI classification is available but completely optional. The rule engine works free without any external services. AI is only used for borderline messages that the rule engine can't confidently classify. On Shopify and Wix, InboxShield uses rule-based filtering only.
On WordPress, everything runs locally by default — no data leaves your server unless you enable AI. Even then, names, emails, phone numbers, and addresses are never sent to AI. Only the message content and business context are used. On Shopify and Wix, minimal data is sent to the InboxShield API for classification and auto-deleted after 90 days. See our Privacy Policy.
Yes! On WordPress, the rule engine is free forever with no message limits. On Shopify and Wix, the free plan includes 50 protected messages per month with full rule-based protection.
InboxShield is designed to protect real leads, not just block spam. Uncertain messages are quarantined for your review rather than silently deleted. You can mark corrections, and InboxShield learns from them — false positives decrease over time.
Absolutely! Visit our feature request board to submit ideas and vote on what gets built next.

Stop filtering through junk.
Start focusing on real customers.

Choose your platform and protect your contact forms in minutes.