Verification that tells you which leads are real.
BounceBlock verifies every email and validates every phone in one upload, then removes duplicates — so your team only chases contacts that are real and reachable.
Clean data, without the credit math.
Bad contact data quietly wastes every team’s time and money — bounced emails hurt your sender reputation, dead numbers burn your reps’ hours, and duplicates inflate every report.
Most verification tools only solve half of it. They check email, charge by the credit, and never touch phone numbers — so you end up stitching together two vendors and still guessing which leads are worth a call.
Our goal is simple: make list cleaning fast, flat-priced, and genuinely complete — email and phone, verified in one pass, with a clean file you can trust.
Why BounceBlock?
Most tools verify email and stop there. BounceBlock validates email and phone in the same upload, prices it flat, and lets you preview the results free before you pay. One clean file, one predictable bill, zero credit accounting.
Our story.
BounceBlock was founded in 2026 by Dipak Bhosale, operated under Lacewing Technologies, with one conviction: a lead you can’t actually reach isn’t a lead.
As outbound got harder and inboxes got stricter, teams in real estate, insurance, recruiting and agencies were paying more than ever for lists that were half-dead on arrival. The tools meant to help only verified email, metered every check by the credit, and left phone numbers — often the faster channel — completely unchecked.
“A percentage of ‘valid’ isn’t the answer. A clean file you can import and dial today is the answer.”
What we believe.
Verification is only useful if it’s complete and honest. So we bundle email and phone into one pass, mark catch-all and unknown results plainly instead of guessing, delete your raw file within 24 hours, and let you see the damage on a free preview before you ever pay.
Where we are now.
BounceBlock is operated by Lacewing Technologies, an independent company based in Maharashtra, India (GSTIN 27BSZPB5125R1ZW), serving customers worldwide. We’re not a data broker and we don’t sell contact data — we only verify the lists you already own. That independence is why we can keep pricing flat and describe accuracy honestly.
Where we’re going.
Toward verification that disappears into your workflow — real-time checks at the point of capture, deeper CRM and form integrations, and a growing set of free tools for anyone who keeps a list clean. If that’s something you want to use — or help build — we’d love to hear from you.
Six principles, no exceptions.
Every product, pricing and policy decision gets weighed against these. None of them shift when a competitor ships a flashier number.
Verify email and phone together
Most tools stop at email and charge you again for phone. We validate both in the same upload, at one flat price, because a lead you can't reach by either channel isn't a lead.
See what's wrong before you pay
Upload a list and preview the first 100 results free — how many are invalid, catch-all, disposable or duplicate — before spending a rupee. No card, no sales call to see a number.
Your data is yours
Raw uploads are encrypted (AES-256), used only to run the verification you asked for, and permanently deleted within 24 hours. We never sell, share or train on your contacts.
Flat pricing, no credit math
Four published tiers with a clear monthly allowance. No per-credit metering, no surprise overage bills, no hidden fees. The price you see is the price you pay.
Honest accuracy
Verification is a strong signal, not a crystal ball. We publish how our checks work, mark catch-all and unknown results honestly instead of guessing, and never bill you for an 'unknown'.
Accessible to any team
The free tier is the real product on a small monthly quota — same engine, same quality score, same clean-file download. Upgrade only when your volume needs it.
What BounceBlock builds, and why.
Everything we ship is built around one belief: verification is only worth paying for when it's complete — email and phone — and priced so any team can budget for it.
Email verification
Syntax, domain, MX, live SMTP mailbox pings, plus catch-all and disposable detection — so invalids get caught before they bounce and hurt your sender reputation.
Phone validation
Line type, carrier and active status on the same numbers, in the same upload. One clean file covers your whole outreach, not just the email half.
Dedupe + quality score
Duplicate removal and a per-list quality score so you know exactly how healthy a list is, and get back a clean CSV that's ready to import anywhere.
Real-time API + Form Guard
A documented REST API and inline form protection to verify a contact the moment it's entered — keep junk out of your CRM at the point of capture.
Free tools
Dozens of free, no-login utilities — deliverability tests, SPF/DKIM/DMARC checks, syntax and disposable checkers — for anyone keeping a list clean.
Independent & founder-led
BounceBlock is operated by Lacewing Technologies, founded by Dipak Bhosale. Funded by our customers, not outside investors — which is why our pricing and claims stay honest.
Founder-led. Independent.
Operated by Lacewing Technologies · based in Maharashtra, India · serving customers globally.
Dipak Bhosale
Built BounceBlock to make list cleaning simple and flat-priced. Reads every support email — reach him via the contact page.
Frequently asked about BounceBlock as a company.
What prospective customers, partners and reviewers most often ask.
Who built BounceBlock?
BounceBlock was founded in 2026 by Dipak Bhosale and is operated by Lacewing Technologies. It started from a simple frustration: email-verification tools that charged per credit, ignored phone numbers entirely, and made you pay before you could see how bad a list was. BounceBlock was built to fix all three — email and phone in one flat-priced pass, with a free preview first.
Where is the company based?
BounceBlock.io is operated by Lacewing Technologies, based in Unit 2402, D-33, Turbhe MIDC Road, 24th Floor, Navi Mumbai, Maharashtra 400703, India (GSTIN 27BSZPB5125R1ZW). We serve customers globally and run on cloud infrastructure with regional capacity.
What makes BounceBlock different?
Three things. First, we verify email and phone together in a single upload instead of selling them as separate products. Second, pricing is flat with a published monthly allowance — no per-credit math and no overage surprises. Third, you preview your first 100 results free, so you see exactly how many contacts are bad before you pay.
What are your support hours and channels?
Email support at support@bounceblock.io runs Mon–Fri, 9am–6pm IST · replies within 1 business day. Billing questions go to billing@bounceblock.io, and you can reach us any time from the contact page.
What is the refund policy?
Paid plans include a 14-day money-back guarantee, and you can cancel anytime from your dashboard — cancellation stops future renewals and access continues to the end of the paid period. Full details are on the Refund & Cancellation Policy.
How is my uploaded data handled?
The contacts you upload are encrypted in transit and at rest, processed only to run the verification you requested, and permanently deleted within 24 hours. We never sell, share or use your data to train models. Full details are in the Privacy Policy and Data Processing Agreement.
Is BounceBlock funded or bootstrapped?
Lacewing Technologies is independently operated and funded by subscription revenue from paying customers — no outside investors. That independence is why we can price flatly and describe accuracy honestly instead of optimising every claim for growth.
What's on the roadmap?
Deeper CRM and form integrations, a faster real-time API, team and workspace controls for larger accounts, and a growing library of free deliverability tools. The roadmap isn't a contract, but it's where we're committing engineering time.
Ready to clean your list?
Preview your first 100 results free — email and phone, no credit card. See how many bad contacts are hiding before you pay.