Email Verification Tool: Clean your lists and reduce bounce rates
Clean and validate your email list with just a few clicks. Say goodbye to bounced emails and hello to high deliverability rates.
Used by the world's leading companies
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Customer Testimonials
Real Results. Real Customers.
4X
Increase in reply rates
2X
Faster-to-start campaign
30%
Higher inbox placement
“We've tested a lot of sequencers & ultimately Instantly has been the most helpful in generating revenue for our clients.
It has all the functionality any advanced cold email initiative needs, while still being super user friendly & intuitive.
With co-pilot enabling detailed analysis as well, At this point I truly believe it's the best all around sequencer for cold email which is why it's the platform we use for our clients. “
4X
Increase in reply rates
2X
Faster-to-start campaign
30%
Higher inbox placement
“Instantly became the backbone of our outreach — over 100,000 emails sent across 20+ domains with 20%+ reply rates and a steady stream of qualified leads. It’s not just a sending tool, it’s our growth engine.”
4X
Increase in reply rates
2X
Faster-to-start campaign
30%
Higher inbox placement
"Instantly nails what most email tools get wrong - it's actually intuitive to set up and use. The integrations work seamlessly, and the UX doesn't make you want to pull your hair out."
How does email verification work?
Email verification checks whether an address is real and able to receive mail before you send to it. A verifier confirms the address format, checks the domain and MX records, tests the mailbox at the mail server, and flags disposable, catch-all, and other risky addresses. With Instantly you upload your list and the tool validates every address, returning detailed reports and insights within minutes.
What does email verification check before a cold email is sent?
It checks that each address is valid, active, and safe to send to, so invalid contacts are removed before they trigger a bounce. Standard checks cover syntax, the domain and its mail servers, and the mailbox itself, plus flags for disposable and catch-all addresses. Removing these first protects your sender reputation and helps more messages land in the inbox.
Can I verify a whole email list in bulk?
Yes. You upload your email list and Instantly validates every address at once, then returns detailed reports and actionable insights within minutes. This lets you clean large lists before a campaign instead of checking addresses one at a time.
Does the email verifier work with Instantly campaigns?
Yes. The verification tool integrates directly with Instantly, so you can clean a list and then load it into your outreach without moving between separate tools. Upload the list, let the platform validate it, and use the clean results in your campaigns.
Is Instantly's email verification free?
You can start for free with 25 credits and no credit card required. Beyond the free credits, Instantly offers flexible pricing plans suited to businesses of all sizes, from small startups to larger teams. This lets you test the tool on a sample of your list before committing.
Will verifying my list reduce bounce rates?
Yes. Verifying removes invalid addresses before you send, which lowers bounce rates and protects your sender reputation. A healthy list keeps your deliverability high, so more of your messages reach real, active recipients and land in the inbox.
Does Instantly verify catch-all email addresses?
Yes. Instantly's verification identifies and verifies catch-all addresses, which many tools mark as unknown and discard. According to the page this can recover up to 40% of leads that would otherwise be dropped, so you can safely reach recipients on catch-all domains.
What do the valid, risky, and invalid results mean, and how should I treat each?
Valid means the address is safe to send to, invalid means it will bounce and should be removed, and risky or unknown means the result is uncertain, often because the domain is catch-all and accepts all mail. Send confidently to valid addresses and drop invalid ones. Instantly additionally verifies catch-all addresses, so many results other tools leave as unknown can still be reached.
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