Upload a messy list. Download a clean one.
Verify entire CSV lists in bulk, see a list health score, and export only the addresses that are safe to send to — before your next campaign bounces.
How bulk verification works
Upload
Drop in a CSV and pick the column with the email addresses.
Verify
Every row runs the full pipeline — syntax, MX, disposable, role and more.
Score
See a list health breakdown: deliverable, risky and undeliverable.
Export
Download the full results, or a clean deliverable-only list.
Lower bounces, better deliverability
Inbox providers watch your bounce rate closely — a single stale list can push you into the spam folder. Cleaning your list before a send removes the dead and disposable addresses that trigger bounces, so your good subscribers keep landing in the inbox. Learn more in our email list cleaning guide.
Frequently asked questions
CSV. Map the column that holds email addresses, we verify every row in the background, and you download the results.
Yes. Export the full results with a status per row, or just the deliverable addresses as a clean list.
Removing undeliverable and disposable addresses before you send keeps hard bounces low, which protects your sender reputation with inbox providers.