BounceBlock.io
Clean Lists for Reactivation

Clean Lists for Reactivation in two minutes

Win-back campaigns target your most dormant contacts — exactly the segment most likely to have gone stale. Verifying that long-inactive list before you send keeps a reactivation push from bouncing off dead addresses and undoing the very reputation you're trying to rebuild.

100 free creditsNo credit cardResults in under 2 min
6
Deliverability checks per address
Email + phone
Validated in one upload
Under 2 min
Average list clean-up time
100 free
Verifications, no card required
The problem

What's hiding in your list

Dormant contacts are the highest-decay segment, so a win-back list mailed without verification often carries an alarming share of dead addresses.

Reactivation sends to long-inactive recipients already strain your reputation; pairing that with bounces compounds the risk.

Some dormant addresses have become recycled spam traps, which are far more damaging than a simple bounce.

Why BounceBlock

Email and phone — cleaned in one pass

Verify in one pass

Every email checked for deliverability and every phone validated — in a single upload.

Catch what others miss

Typos, catch-all domains, disposable addresses, dead numbers and silent duplicates.

Flat, simple pricing

Re-engage only contacts that still exist. No per-credit math, no surprise overage bills.

How it works

Clean leads in three steps

No setup, no integrations, no learning curve. Upload a file, download a better one.

1

Upload your CSV

Drag in any contact list. We auto-detect email, phone, name and company columns.

2

We verify everything

Every email checked for deliverability, every phone validated, duplicates flagged — with a live quality score.

3

Download clean leads

Export a verified, deduplicated list your team can actually call and email.

Now onboarding early teams

Email and phone, cleaned in a single upload — see exactly how many bad contacts are hiding in your list before you pay a cent.

100 free verifications · no credit card · results in under 2 minutes

Questions

Frequently asked

Why verify before a reactivation campaign?

The dormant segment decays the fastest, so verification removes the dead and trap addresses that would otherwise tank a win-back send.

What share of a dormant list is usually still valid?

It varies widely by list age, which is exactly why you verify rather than guess — you'll see the real split and a quality score per contact.

Can I re-verify just the inactive segment?

Yes — export the dormant slice, clean it, and only re-engage the addresses that come back valid.

Stop wasting hours on dead leads.

Upload your list and see how clean it really is — free, in under two minutes.

100 free creditsNo credit cardCancel anytime