Clean a Webinar List in two minutes
Webinar registration forms are a magnet for throwaway and mistyped addresses — people register to get the recording, not to hear from you. Cleaning the registrant list before your reminder and follow-up sequence keeps those automated sends from bouncing and protects the sender reputation your whole webinar funnel depends on.
What's hiding in your list
Registrants frequently enter a personal or fake address just to reach the registration confirmation, leaving your reminder emails undeliverable.
Reminder and replay sequences fire automatically to the full list, so a batch of invalid registrations can spike your bounce rate the morning of the event.
High registration volume in a short window means typos and disposable domains slip in faster than a manual review could catch them.
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
Reach registrants who'll actually show. No per-credit math, no surprise overage bills.
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.
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
Frequently asked
When should I clean a webinar list?
Right after registration closes and before your reminder sequence begins, so the automated sends only go to addresses that exist.
Does this help with no-show follow-up?
Yes — a verified list means your replay and nurture emails reach real inboxes, which is where most webinar pipeline is actually won.
Can I verify registrations as they come in?
Yes — the BounceBlock API can validate each registration in real time at the form, so bad addresses never enter the sequence.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.