Email verification app for Shopify
EmailSignal validates every customer email in your Shopify store automatically — then tags each customer with the result and can opt undeliverable addresses out of email marketing, so your Shopify Email, Klaviyo or Mailchimp campaigns only go to real inboxes.
300 free verifications · then $9.99/month · See pricing
Clean Shopify email lists without lifting a finger
Cross-checked accuracy
Every customer email is checked across multiple independent verification engines and the results are cross-checked — about 20% more accurate than a single provider.
Always-on verification
New customers and changed email addresses are verified automatically as they arrive. No exports, no CSV uploads, no manual re-runs.
Catch risky addresses
Detects undeliverable mailboxes, disposable and temporary domains, role-based addresses and catch-all domains before they hurt your sender reputation.
AI-powered list insights
An AI-generated list-health report explains in plain language what your verification results mean — how healthy your customer list is, how it is trending, and what to do next to protect deliverability.
Results as tags
Each customer gets a tag for its verification result, so you can segment, filter and exclude with the tools you already use.
Automatic marketing opt-out
Choose which results (for example undeliverable or risky) should be unsubscribed from email marketing, and EmailSignal updates the customer’s marketing consent in Shopify for you.
How it works on Shopify
- 1
Install from the Shopify App Store
Approve the customer permissions and EmailSignal connects to your store instantly. No code, no theme changes.
- 2
Your customer list is verified
Existing customers are synced and verified in the background, without slowing down your storefront.
- 3
Act on customer tags
Every customer is tagged with its result. Build Shopify segments on the tags, or let EmailSignal opt risky addresses out of email marketing for you.
Results written as Shopify customer tags
Tags are standard Shopify customer tags, so they work in Shopify segments, Shopify Email, Shopify Flow and any app that syncs customer tags — including Klaviyo, Mailchimp and Omnisend.
emailsignal:deliverableemailsignal:deliverable:confidentemailsignal:riskyemailsignal:risky:roleemailsignal:undeliverableShopify email verification FAQ
- Does EmailSignal work with Shopify Email and Klaviyo?
- Yes. Results are ordinary Shopify customer tags, so you can build a Shopify segment such as “customer_tags CONTAINS emailsignal:deliverable” for Shopify Email, or filter by the synced tag in Klaviyo, Mailchimp or Omnisend.
- Will it slow down my Shopify store?
- No. Verification runs as a background job on our servers, completely separate from your storefront and checkout.
- Can it remove invalid emails from my Shopify marketing list?
- Yes. Turn on automatic marketing opt-out in the app settings and pick which verification results should be unsubscribed. EmailSignal updates the customer’s email marketing consent in Shopify.
- What happens when a customer changes their email?
- The new address is picked up and verified automatically, and the customer’s tags are updated to match.
- Does EmailSignal use AI?
- Yes — for insights. Every address is verified by multiple independent engines whose results are cross-checked, then AI turns those results into a plain-language list-health report with recommendations for your Shopify store. The AI only sees aggregate statistics, never individual email addresses.
- How much does EmailSignal cost on Shopify?
- Installing is free and includes 300 verifications. The Pro plan is $9.99/month with 10,000 verifications included when you subscribe, then $0.003 per email. AI-powered insights are included on every plan. Full details are on the pricing page.
Verify your Shopify list today
Install from the Shopify App Store and get 300 free verifications. Also on Wix? EmailSignal works there too.