Fake emails inflate your signup numbers and poison your onboarding metrics. BounceZero validates every new account in real time via API - so your product team works with accurate data from day one.
SaaS companies lose 15-25% of trial signups to fake, disposable, or mistyped email addresses. Every one of them distorts your data and drains your resources.
When 1 in 5 trial accounts is a throwaway email, your activation rate, trial-to-paid conversion, and cohort analyses are all wrong. Your product team ends up optimizing for users who never existed.
Welcome sequences, activation nudges, and trial-expiry reminders sent to dead mailboxes bounce back, burn your sender reputation, and push your real onboarding emails toward the spam folder.
Disposable addresses let one person spin up unlimited free trials, abuse usage credits, and skew your unit economics. Blocking them at signup closes the loophole before it costs you.
In a single API call whose timing varies by provider and verification path, BounceZero runs each new email through six layers of validation - before the account ever touches your database.
We connect to the recipient mail server and confirm the exact mailbox exists - not just the domain. Typos and invented addresses are caught instantly.
Temp-mail and burner domains are flagged in real time, so free-trial abusers can't register with 10-minute inboxes.
Our triple-probe technique resolves catch-all domains that accept everything - a check most verifiers simply give up on.
Addresses like info@, admin@, and support@ rarely convert to paying users. Flag or route them differently in your signup flow.
We confirm the domain actually has functioning mail servers before you waste an onboarding sequence on it.
Known spam trap patterns are identified and excluded, protecting the sender reputation your lifecycle emails depend on.
Drop BounceZero into your registration flow in an afternoon. Most SaaS teams ship it in under 50 lines of code.
Create a free account - no credit card required - and copy your API key from the dashboard. You get 100 free verifications every month to test with.
Call the BounceZero verification API server-side when a user submits your registration form. One POST request, one JSON response, response time that varies by provider and verification path.
Valid emails proceed to account creation. Disposable and invalid addresses get an inline "please use a real email" prompt. Risky results can be routed to double opt-in.
Upload your current users through bulk verification - up to 1,000,000 addresses per dashboard job, processed in minutes - to segment dead accounts out of your lifecycle campaigns.
With fake signups blocked at the door, your activation rate, trial conversion, and email engagement numbers finally reflect real users - and real revenue potential.
No seats, no platform fees, no annual contracts. Pay only for the verifications you run.
Not sure what fake signups cost you today? Try our ROI calculator.
New to verification? Start with the complete email verification guide.
Everything SaaS teams ask before adding email verification to their signup flow.
No. BounceZero's API responds with timing that varies by provider and verification path on average - faster than most password-hashing routines. You can call it asynchronously while the user completes the form, so verification adds effectively zero perceived latency.
Across SaaS products, 15-25% of trial signups use fake, disposable, or mistyped email addresses. The rate is highest for products with generous free tiers, where users create throwaway accounts to reset trial limits.
Yes. Disposable detection is one of our six core checks. We track thousands of burner domains - including newly registered ones - and flag them in real time so you can reject or challenge those signups before the account is created.
Run your user base through bulk verification - up to 1,000,000 addresses per dashboard job, with a 10K-email list processed in 5-10 minutes. Then suppress invalid accounts from lifecycle emails and re-engage only real, reachable users.
BounceZero delivers up to 99.8% accuracy in internal testing on SMTP-verifiable addresses versus an industry benchmark of roughly 95%. Our 3-probe catch-all detection resolves ambiguous corporate domains that most competitors mark as "unknown" - critical for B2B SaaS where many signups come from company email addresses.
Yes. Every account includes 100 free verifications per month with full API access and no credit card required. That's enough to wire up your staging environment and validate the integration before going live.
up to 99.8% accuracy in internal testing on SMTP-verifiable addresses. $3 per 1,000 verifications. Results with timing that varies by provider and verification path. Add real-time email verification to your signup flow today - your first 100 verifications every month are free.
No credit card required - 100 free verifications/month - Cancel anytime
Tailored use cases across teams and sectors
Verify candidate emails before outreach
Block fake signups, reduce fraud at KYC
Stop fake accounts and keep customer data deliverable
Every rep sends on clean data - protect quota
Deliver verified emails, retain clients longer
Clean subscribers before every issue sends
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