All Comparisons

Fidro vs Kickbox

Kickbox checks whether an email address is real and deliverable. Fidro checks whether the person behind it is, using the email, the IP and the network together, and tells your code to allow, challenge or block.

Last updated: March 2026

What is Fidro?

Fidro is a fraud detection API for developers. One call checks an email address and an IP for disposable domains, VPNs, proxies, Tor and datacenters, remembers earlier signups and logins, and returns a 0 to 100 risk score with an allow, challenge or block recommendation. On the Pro plan it also scores Stripe payments. The free plan includes 200 validations a month, no credit card needed.

Feature Comparison

Feature Fidro Kickbox
Email Validation Yes Yes
IP Intelligence Yes No
Geolocation Analysis Yes No
Stripe Chargeback Prevention Yes No
Risk Scoring Yes Limited
Custom Blocklists Yes No
Velocity & Anomaly Detection Yes No
Free Plan 200/month 100 free verifications
API-First Yes Yes
Starting Price Free $5/month

Where Fidro differs from Kickbox

More than the email

Kickbox checks the email. Fidro checks the email, the IP, the network and the location in the same call, and remembers what it has seen before.

A decision, not a data point

Every call returns a score from 0 to 100 and allow, challenge or block, with the reasons. Your code acts on one field instead of building its own scoring.

Ship it this afternoon

One REST call, with SDKs for Node, PHP, Laravel, Python and Go. Start with 200 free validations a month, no credit card.

Want to see it first? Check an email for free or browse the disposable email list.

Common questions

How does Fidro compare to Kickbox for email validation?
Kickbox is built for deliverability: it tells you whether an address will accept mail, which is what you want before a send. Fidro checks the address for a different job. It looks at the email, the IP and the network together, remembers earlier signups, and returns one risk score with an allow, challenge or block recommendation.
Is Fidro cheaper than Kickbox?
Kickbox starts at $5 a month and offers 100 free verifications. Fidro's free plan includes 200 validations a month, no credit card needed, and paid plans start at $29 a month for 5,000. Kickbox is priced for verifying addresses; Fidro is priced per signup, login or payment you check.
Can I switch from Kickbox to Fidro?
Yes. Fidro is one REST call, with SDKs for Node, PHP, Laravel, Python and Go, so switching from Kickbox means changing the request and acting on the recommendation it returns. You also get IP, VPN and location checks in the same call. Blocklists come with the Starter plan, and Stripe payment scoring with Pro.

Switch in an afternoon.

200 free validations a month. No credit card, no sales call.

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