Verify every email. Validate every phone. One upload, one flat price.
Your lead list is lying to you — up to 40% of contacts go dead: bad emails, disconnected numbers, silent duplicates. BounceBlock catches all three in one pass.
Your list, scored
4,812 contacts analyzed · 1,034 problems found
See exactly what’s wrong
before you pay a cent.
Run a free preview on your first 100 leads and watch BounceBlock surface the bad data hiding in your list — typo’d emails, disconnected numbers, catch-all domains, and silent duplicates.
- Deliverability check on every email — valid, invalid, or catch-all.
- Phone validation with line type (mobile / landline) and active status.
- Smart deduplication that catches the same contact across columns.
Email and phone — cleaned in one pass
Most tools verify your emails and stop there. BounceBlock validates phones in the same upload, for one flat price.
Email verification
Syntax, domain, MX and live mailbox checks catch hard bounces before they ever touch your sender score.
Phone validation
Confirm numbers are live with line type & carrier — the feature email-only tools don’t have.
Duplicate removal
Hash-based matching finds dupes even when formatting differs.
Quality score
One number, 0–100, tells you how healthy a list is.
Bank-grade security
AES-256, auto-deleted in 24h. Your data is never sold.
Clean leads in three steps
No setup, no integrations, no learning curve. Upload a file, download a better one.
Upload your CSV
Drag in any contact list. We auto-detect email, phone, name and company columns.
We verify everything
Every email checked for deliverability, every phone validated, duplicates flagged — with a live quality score.
Download clean leads
Export a verified, deduplicated list your team can actually call and email.
Be one of our first 100 teams
Email and phone, cleaned in the same upload
Most verifiers stop at email. BounceBlock validates both — deliverability on every address and line-type/active status on every number — then removes duplicates, so one clean file covers your whole outreach. Flat monthly price, no per-credit math.
100 free verifications · no credit card
See it before you pay
Upload a real list and preview your first 100 rows free — no credit card. You see exactly how many bad contacts are hiding before you decide.
Flat, predictable pricing
One monthly price with a generous allowance. No credit packs to top up, no surprise overage bills mid-project.
Your data stays yours
Files are encrypted, processed, and deleted on a fixed retention schedule. Verification is the only thing we ever do with your contacts.
Built for whole teams
Simple enough for non-technical users, with an API and team seats when you need to verify at the point of capture.
One tool that does what three can't
| BounceBlock | Email-only verifiers | Spreadsheets | |
|---|---|---|---|
| Email verification | ✓ | ✓ | Manual |
| Phone validation | ✓ | ✕ | ✕ |
| Duplicate removal | ✓ | Sometimes | Manual |
| Flat monthly price | ✓ | Pay-per-credit | — |
| No credit card to start | ✓ | Varies | — |
| Quality score | ✓ | Rarely | ✕ |
| Clean file in under 2 min | ✓ | ✓ | Hours |
One price. No credits. No surprises.
Pay a flat monthly rate and verify your lists — emails and phones included. Cancel anytime.
- Full list downloads
- Email + phone validation
- 30-day history
- Everything in Starter
- Priority support
- 90-day history
- API access
- 5 team members
- 1-year history
14-day money-back guarantee · You never pay for “unknown” results
Paid plans are billed monthly in USD and auto-renew until cancelled — cancel anytime from your dashboard. By subscribing you agree to our Terms of Service and Refund & Cancellation Policy.
Everything you might ask
BounceBlock runs multi-step verification on every address — syntax, domain, MX records, live SMTP mailbox pings, plus catch-all and disposable detection — so you catch the invalid and risky contacts that cause bounces before you send. Phone numbers are validated for line type and active status.
Your file is encrypted with AES-256, processed, and permanently deleted within 24 hours. We never sell or share your contacts — verification is the only thing we ever do with them. GDPR and CCPA compliant from day one.
Yes — in the same upload, at no extra cost. Most email verification tools don't touch phone numbers. BounceBlock validates both, so one clean file covers your whole outreach.
One flat monthly price with a generous monthly allowance — no per-credit math, no surprise overage bills. Start free with 100 verifications, upgrade when you need more.
Absolutely. Upload a list and preview your first 100 results free — no credit card. You'll see exactly how many bad contacts are hiding before you decide to unlock the full clean file.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.