Sales Loves Marketing
Acquired by DiscoverOrg (now ZoomInfo) in March 2019; still sold under the NeverBounce name, listed on G2 as NeverBounce - Powered by ZoomInfo.
- Best for
- Marketing and sales teams that want to remove invalid and risky addresses before sending email campaigns or cold outreach
- Starting price
- $8 per 1,000 credits
- Free plan
- ✗ No
- Free trial
- ✓ Yes
NeverBounce is an email verification service. It checks whether email addresses exist and can receive mail, so you can remove bad addresses before a campaign and protect your sender reputation. Pay-as-you-go pricing starts at $8 per 1,000 checks.
Who is NeverBounce for?
NeverBounce suits marketers who send newsletters and campaigns, and sales teams that run cold outreach. A high bounce rate hurts deliverability, so cleaning a list before you send is basic hygiene. NeverBounce has been part of ZoomInfo since DiscoverOrg, which later became ZoomInfo, bought it in March 2019.
What are NeverBounce's main features?
Clean: bulk list verification
You upload a list or connect a platform. NeverBounce removes duplicates, then sorts each address into one of five results:
- Valid: verified as a real address that accepts mail. Safe to send.
- Invalid: the address does not exist or does not accept mail. Don't send.
- Disposable: a temporary address. Don't send.
- Accept all (unverifiable): the domain accepts all mail, so the address can't be fully checked. NeverBounce says these are often valid but advises caution.
- Unknown: the mail server gave no clear answer in time. NeverBounce suggests re-verifying before sending.
Before you pay to verify a list, you can run a free analysis that estimates the list's bounce rate. NeverBounce also fixes common domain typos automatically, such as "gmai" to "gmail".
Verify: real-time checks at the point of entry
The V4 API checks single addresses, for example when someone fills in a sign-up or demo form. NeverBounce's documentation advises blocking only invalid and disposable addresses at that moment, because unknown results happen more often in single checks and are not a negative result. Teams without developers can add a JavaScript widget to their forms instead. Official API libraries exist for PHP, Ruby, Node.js, Python, Go, .NET and Java.
Sync: integrations
NeverBounce lists more than 80 integrations, including HubSpot, Salesforce, Pipedrive, Mailchimp, ActiveCampaign and MailerLite, form tools such as Typeform and Unbounce, and Zapier and n8n for other apps. On the Growth plan, sync checks only new, unique emails each run, so duplicates don't use credits.
How much does NeverBounce cost?
Prices checked on 1 November 2026, shown in US dollars:
- Pay as you go: $8 per 1,000 credits, where one credit verifies one email. The price per credit falls with volume: $0.005 from 10,000 credits, $0.003 from 250,000 and $0.002 at 2 million. Credits expire 12 months after purchase.
- Growth: $49 per month for up to 10,000 emails, with automatic CRM sync, AI lead suggestions and scoring, and unlimited parallel list cleaning. It replaced the old Sync plan.
- Enterprise: custom pricing, typically for 250,000 or more emails a month.
You can start without a credit card. The pricing page offers a free list analysis and free test credits, and the help center says new accounts get 10 free credits.
What do users say about NeverBounce?
On G2, where it is listed as NeverBounce - Powered by ZoomInfo, it holds 4.1 out of 5 from 145 reviews. G2's summary names ease of use, easy integrations, easy setup and the interface as strengths, and the credit system, cost and payment issues as the main complaints.
On Capterra it holds 4.4 out of 5 from 51 reviews. Capterra reviewers commonly praise accurate results, speed, real-time verification and integrations with tools such as Salesforce and HubSpot. Common complaints are that it costs more than some competitors, very large lists take longer, accept-all addresses stay uncertain, and support experiences vary.
When should you choose an alternative?
- You also need to find email addresses, not only verify them. Hunter and Snov.io find and verify addresses in one tool.
- You want to understand why emails bounce first. Read about email deliverability and the sender score.
Key features
- Bulk list cleaning. Upload a list or connect a platform, and NeverBounce dedupes it and sorts each address into valid, invalid, disposable, accept all (unverifiable) or unknown.
- Free list analysis. Run a free analysis of a list's overall health, including an estimated bounce rate, before paying to verify it.
- Real-time verification API. Check single addresses at the point of entry, for example in sign-up forms, through the V4 API.
- JavaScript widget. Adds verification to web forms without custom development, with settings for authorized domains and throttling.
- Typo correction. Fixes common typos in email domains automatically, such as "gmai" to "gmail", and can return the company name for each email.
- Sync with email and CRM platforms. More than 80 integrations, including HubSpot, Salesforce, Pipedrive, Mailchimp, ActiveCampaign and MailerLite, plus form tools, Zapier and n8n.
NeverBounce pricing
| Plan | Price | Notes |
|---|---|---|
| Pay as you go | $8 per 1,000 credits ($0.008 each) | One credit verifies one email. The price per credit drops with volume, to $0.002 at 2 million credits. Credits expire 12 months after purchase. |
| Growth | $49 per month for up to 10,000 emails | Adds automatic sync with your CRM (only new, unique emails use credits), AI lead suggestions and scoring, and unlimited parallel list cleaning. Billed monthly or yearly; replaces the old Sync plan. |
| Enterprise | Custom quote | Typically for 250,000 or more emails a month, with a dedicated account manager, advanced security and compliance, and custom rules. |
NeverBounce FAQ
What does NeverBounce do?
NeverBounce checks whether email addresses exist and can receive mail, so you can remove bad addresses before you send. It works on uploaded lists, through an API at the point of entry, and through integrations with email and CRM platforms.
How much does NeverBounce cost?
On 1 November 2026, pay as you go cost $8 per 1,000 credits, falling to $0.002 per credit at 2 million credits. The Growth plan cost $49 per month for up to 10,000 emails, and Enterprise is quoted on request. Prices are in US dollars.
What do NeverBounce result codes mean?
Valid means the address was verified as real. Invalid means it does not exist or won't accept mail. Disposable means a temporary address. Accept all (unverifiable) means the domain accepts every address, so it can't be fully checked. Unknown means the mail server gave no clear answer in time; NeverBounce suggests re-verifying these before sending.
Who owns NeverBounce?
DiscoverOrg acquired NeverBounce in March 2019. DiscoverOrg later became ZoomInfo, which still runs NeverBounce as a separate brand.
Should I block accept-all and unknown addresses in my sign-up form?
NeverBounce's developer documentation recommends blocking only invalid and disposable addresses at the point of entry, and letting valid, accept-all and unknown addresses through, because unknown results are more common in single checks and are not a sign that an address is bad.