MailShield ‑ Email Validator

MailShield, officially listed on the Shopify App Store as MailShield ‑ Email Validator, is a Shopify app in the Fraud category. Bad email addresses cause failed deliveries, chargebacks, fake accounts, and support tickets. Email Risk Guard checks every email at checkout and blocks the risky ones before the order is placed. It rejects disposable email domains, enforces your custom blocklist, and catches common typos, suggesting the correct domain so customers can fix it. Each order can also be scored after checkout, tagged by risk, and noted for your team to review before shipping.

MailShield offers a free plan and 2 paid plans starting at $5/month and going up to $9.99/month. The free plan includes Block disposable emails at checkout, Typo detection & "Did you mean?" fix, Custom domain blocklist, and Works on every Shopify plan. The paid plans unlock advanced features beyond what's available on the free tier.

Yes — MailShield offers a free plan alongside paid options. The free plan includes Block disposable emails at checkout, Typo detection & "Did you mean?" fix, and Custom domain blocklist. Paid plans start at $5/month for advanced features.

MailShield launched on May 24, 2026.

MailShield does not currently carry Shopify's Built for Shopify badge. The badge is awarded to apps that meet Shopify's published standards for performance, ease of use, and merchant value — many high-quality apps operate without it.

Merchants commonly compare MailShield with Blockify Fraud Filter, Blocker, Chargeflow Prevent Chargebacks, Blocky Fraud Filter IP Blocker, and Dakaas Fraud Filter, Antitheft. Each alternative covers a similar use case but differs on pricing model, integration depth, and the specific themes merchants praise in reviews — see the alternatives section above for a side-by-side.