Verify email before sending — no bounces, no spam traps
Run your list through multi-layer checks: syntax, domain, MX, catch-all and bounce risk. Send only to live addresses and keep deliverability high.
Junk in your list kills deliverability
Dead addresses bounce, spam traps tank your domain reputation, and as a result your emails hit spam in bulk — even for real customers.
A clean list before the first email
Emailzavr checks every address across several layers and flags risk so you don't waste limits on dead contacts.
- Syntax and domain checks
- MX records and mail server availability
- Catch-all and disposable domain detection
- Per-address bounce risk scoring
Key features
Syntax & format
Catch typos, spaces and broken addresses.
Domain & MX
Does the domain exist and accept mail.
SMTP check
Ping the mail server without sending anything.
Catch-all & traps
Flag risky and disposable domains.
Risk scoring
Valid / risky / invalid status per address.
Clean export
Push only verified addresses into a campaign.
How it works
Upload your list
Import CSV or pick from the built-in lead database.
Run the check
Syntax, MX, SMTP and catch-all in one pass.
Review results
Filter by valid / risky / invalid and reasons.
Send clean
Only live addresses go into the campaign.
Use cases
Before cold outreach
Cut bounces and protect domain reputation.
Old list cleanup
Remove dead contacts before reactivation.
Form validation
Validate email at signup via the API.
Integrations
Frequently asked questions
Clean your list in minutes
Upload contacts, run the check and send only to live addresses.