Cold campaigns live or die on deliverability. Verify your list first to strip out bounces, spam traps and risky addresses that quietly burn your sending domain, so your pitch reaches real inboxes.
Verify my list, 100 free Bulk verifier No credit card required. Credits never expire. Clean every new list as you build it.Outbound is unforgiving. One bad send can set a domain back for weeks.
High bounce rates tell mailbox providers your list is junk, and your inbox placement collapses for every future send.
Scraped lists are full of spam traps. Hit one and your domain can land on a blacklist that is slow and painful to escape.
Every dead address is a wasted sending slot, a skewed open rate, and a reply you will never get.
From raw prospect list to safe-to-send in minutes.
Drop your CSV into the bulk verifier, or push prospects to the API as you scrape them.
Every address is screened for validity, catch-all, disposable, spam-trap and role status with a live SMTP check.
Export only the Passed addresses and launch with your deliverability protected.
Cold outreach deliverability, answered.
Cold outreach is judged harshly by mailbox providers. A high bounce rate on a fresh campaign signals that your list is low quality, which sends your messages to spam and can damage the sending domain you rely on. Verifying first removes the addresses that would bounce, so your campaign reaches real inboxes and protects your reputation.
Most senders aim to keep hard bounces under about 2 to 3 percent. Cold lists routinely start far above that because they are built from scraped or aggregated data. Running the list through verification before the first send is the most reliable way to get under that threshold.
Verification is one of the biggest levers, but not the only one. Removing invalid addresses, spam traps and risky catch-alls protects your sender reputation, which is a major factor in inbox placement. Pair it with proper domain authentication and sensible sending volume for best results.
Yes. The 16-point engine screens for known spam traps, disposable domains and role accounts, which are the addresses most likely to get a cold-email domain blacklisted. See our spam trap and disposable detection for more on how those checks work.
Upload your CSV to the bulk verifier or send addresses to the API, let the engine validate each one, then export the clean, safe-to-send list. It takes minutes, and credits never expire so you can clean each new list as you build it.
Pay-as-you-go, one credit per address, billed only for Passed and Failed results. Credits never expire and every new account gets 100 free, so you can verify your first list at no cost.
See how many addresses in your outreach list are about to bounce. Start with 100 free credits, no credit card.
Verify my list freeRelated: bulk email verifier, real-time API, and the best email verification APIs.