Klaviyo integrationFree · no credit cardYou're paying Klaviyo to email addresses that were never real
Bots and disposable emails inflate your Klaviyo bill and sink your sender reputation. Securify blocks them at the form, before they become a profile you pay for.
of Klaviyo merchants report fake-signup problems, and mentions are up 230% year-over-year
Free on every Securify plan, including the free plan. Most merchants never pay for it.
Signup protection/ Klaviyo · connectedBlocked · 30 days
1,284
Passed to Klaviyo
3,911
Profiles not billed
1,284
| Verdict | Reason | When | |
|---|---|---|---|
| [email protected] | Blocked | Disposable domain | 2s |
| [email protected] | Passed | Real shopper · welcome flow | 9s |
| [email protected] | Blocked | Bot pattern · 41 signups / min | 14s |
| [email protected] | Passed | Real shopper | 31s |
| [email protected] | Blocked | Non-deliverable · VPN origin | 48s |
Why Klaviyo alone isn't enough
Klaviyo blocks list bombing after it lands. Securify stops it at the form.
Klaviyo's IP blocking is a good backstop. But by the time it triggers, the fake profiles are already in your list, your bounce rate, and your invoice.
- 1
Form submitted
Bot hits your popup with a throwaway address.
Securify checks it here
Disposable, invalid, bot pattern, proxy origin. Blocked in under a second.
- 3
Profile created in Klaviyo
Counts toward your billed profiles. Enters your welcome flow.
- 4
Klaviyo IP block kicks in
After the spike. The bounces already happened.
What gets checked
Four checks on every signup, before Klaviyo sees it
Securify scores every signup in real time and only passes the genuine ones through to Klaviyo. Risky contacts are stopped at the door, and you can review what was filtered.
- On
Disposable / throwaway domains
tempmail, yopmail and similar throwaway providers
- On
Invalid or non-deliverable addresses
Syntax, MX and mailbox checks
- On
Bot and automation patterns
Velocity, headless browsers, replayed forms
- Off
VPN / proxy and high-risk origins
Optional. Off by default for privacy-first stores
The bill
Stop paying to email no one
67% of negative Klaviyo reviews cite billing for inactive profiles. Every fake signup you keep out is a profile that never hits your tier, never gets a send, and never bounces.
Billing math · sample
Klaviyo bills on active profiles. Fake ones cost the same as real ones.
- Signups last 30 days
- 5,195
- Blocked as fake
- 1,284 (24.7%)
- Profiles you didn't pay for
- 1,284
Sample figures. Your dashboard shows real counts.
Setup
Connect once. Nothing else to maintain.
Install on Shopify, connect Klaviyo over OAuth from the Securify dashboard. No password sharing, no snippets in your theme. Existing contacts are never touched.
- 1Add Securify to your Shopify store.
- 2Connect Klaviyo over OAuth from the Securify dashboard.
- 3Done — new signups are validated automatically.
Securify wants to connect to Klaviyo
Read-and-validate access to new profiles. No sending, no campaign access, no deletes.
Works on every Klaviyo plan, including free — this is not a paid-only feature.
67%
of negative Klaviyo reviews cite billing for inactive profiles.
4.4/5
78 reviews on the Shopify App Store. Free plan available.
FAQ
Questions merchants ask before connecting
Is Securify free?
Yes. Signup protection is included on every plan, including free — most merchants never pay for it.
Will it delete contacts already in my Klaviyo list?
No. Securify stops new fake signups going forward and never removes existing records unless you explicitly ask it to.
Does Securify send emails to my list?
Never. Securify only validates signups — it does not send, and it has no access to your campaigns.
Could it block real subscribers?
No. Validation targets disposable, invalid, and bot patterns. Genuine shoppers pass straight through.
How does it connect to Klaviyo?
Securify installs on Shopify and connects to Klaviyo over OAuth. We never see your password, and access is read-and-validate only.