Every invalid email in your ecommerce list wastes send credits and damages your ESP sender score. BounceZero verifies your full customer list in minutes - before each campaign season.
100 free verifications/month - No credit card required
Ecommerce lists grow through checkouts, pop-ups, and discount signups - the exact channels where typos, throwaway addresses, and fake emails pile up.
A "10% off your first order" pop-up invites disposable addresses. Shoppers grab the code with a temp inbox, and that dead address sits in your Klaviyo flows forever - billed on every send.
Mobile checkouts produce gmial.com, hotmial.com, and fat-finger domains every day. Each typo is a guaranteed hard bounce that chips away at your sender reputation with Gmail and Yahoo.
Around 22% of emails go stale every year. Subscribers from last Black Friday changed jobs, abandoned inboxes, or turned into spam traps. Blasting them in this year's campaign gets you filtered.
Each address in your export runs through the full BounceZero pipeline at 99.8% accuracy - well above the industry benchmark of ~95%.
We confirm the mailbox actually exists at the receiving server - so "order confirmation sent" means it was actually delivered.
Catch-all domains accept everything, then bounce later. Our 3-probe technique separates truly deliverable addresses from silent bouncers.
Flags the temp-inbox addresses that discount pop-ups attract, before they inflate your list and your ESP bill.
info@, sales@, and support@ addresses rarely convert and often mark promos as spam. We flag them so you can segment or suppress.
Catches typo domains and dead domains from rushed mobile checkouts - the #1 source of ecommerce hard bounces.
Old subscribers can turn into recycled spam traps. Hitting one tanks your sender score; we identify likely traps before you send.
From Klaviyo, Mailchimp, or Shopify export to campaign-ready list - in one coffee break.
Download your subscriber CSV from Klaviyo, Mailchimp, Omnisend, or Shopify. Any CSV with an email column works - no reformatting needed.
Drag and drop your file into the dashboard. Up to 500,000 emails per batch - enough for even the largest DTC brand list.
All 6 checks run on every address. A 10K list finishes in 5-10 minutes, with live progress in your dashboard.
Get your list back split into deliverable, risky, and invalid - with per-address reasons like disposable, catch-all, or dead mailbox.
Upload the deliverable segment back to your ESP. Suppress the rest and watch bounce rates drop below 0.5% on your next send.
Want real-time verification at checkout instead? Our API responds in 340ms on average - see the API docs.
Most ESPs bill you for every contact - including the dead ones. Cleaning your list usually pays for itself on the very next invoice.
Common questions from store owners and email marketers.
Before every major campaign season - at minimum before Black Friday/Cyber Monday and again mid-year. Email lists decay at roughly 22% per year, so a list cleaned last November already contains thousands of dead addresses by the next peak season.
Yes. Export your subscriber list as a CSV from Klaviyo, Mailchimp, Omnisend, or Shopify, upload it to BounceZero, and re-import the cleaned segment. Any CSV with an email column works - no special formatting required.
BounceZero costs $3 per 1,000 verifications. A 50,000-subscriber store list costs $150 to fully verify - typically far less than what your ESP charges each month for the dead contacts you'd remove. You also get 100 free verifications per month with no credit card.
A 10,000-email list typically completes in 5-10 minutes. Batches up to 500,000 emails are supported, so even large DTC brand lists can be verified in a single upload before a campaign.
Yes. The real-time API responds in 340ms on average, fast enough to validate an address inside your checkout or discount pop-up flow - blocking typos and disposable addresses before they ever enter your list.
Lists cleaned with BounceZero typically see bounce rates under 0.5% on subsequent sends, thanks to 99.8% verification accuracy across all 6 checks - mailbox existence, catch-all, role, disposable, MX, and spam trap detection.
99.8% Accuracy. $3 per 1,000 verifications. Results in seconds. Start with 100 free verifications - no credit card required.
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