What ZeroBounce is
ZeroBounce validates email addresses one at a time, in bulk or in real time through an API. It flags invalid, disposable and inactive addresses, spam traps, abuse emails and catch-alls.
It also offers email warmup, inbox placement tests, server tests for SPF, DKIM and DMARC, blacklist monitoring and a DMARC monitor.
It has a free tier with 100 monthly validation credits.
Who it is for
ZeroBounce is used for enterprise, agencies, business development, email marketing, developers and small business.
A newsletter operator would use it to clean a subscriber list, check signups, and watch the setup that affects inbox delivery. It covers both list quality and sender health, so it fits an operator who sends often and wants both in one place.
An operator with a small, fully confirmed list may only need the free tier.
What you can do with it
Email validation works one at a time, in bulk, or in real time through an API. It flags invalid, disposable and inactive addresses, spam traps, abuse emails and catch-alls. Scoring rates valid and catch-all addresses from 1 to 10.
Other tools are activity data that shows subscriber engagement over the past 30 to 180 days, email warmup, inbox placement tests, email server tests for SPF, DKIM, DMARC and DNS, blacklist monitoring of 200+ lists, a DMARC monitor and an email finder.
Plans and pricing
Freemium is $0 a month with 100 validation credits that refill monthly, 1 inbox placement test, 1 email server test and 1 blacklist monitor.
Pay as you go starts at $39 for 2,000 validations. ZeroBounce ONE is $99 a month with at least 10,000 credits, and adds activity data, warmup, DMARC monitoring, premium API rate limits and VIP 24/7 support. Yearly billing saves 20%, and unused credits roll over.
Enterprise is custom priced for needs above 1 million credits.
What it works with
There are 40+ integrations with email marketing platforms, CRMs, website builders and other tools. Named examples are Sendinblue, GoHighLevel, Zapier, WordPress, HubSpot, Salesforce, Klaviyo, Clay and Sender.
It also has an API with support for 16 programming languages.
Things to know before you choose
Validating an address uses 1 credit. Validating and scoring the same address uses 2. An email finder query uses 20 credits when it succeeds. Unknown results and duplicate removals cost no credits.
Credits never expire while a ZeroBounce ONE subscription is active. Without one, expiry rules may apply based on account dates.
Freemium does not include activity data, warmup or DMARC monitoring. Blacklist monitors scan every 24 hours on Freemium and every 8 hours on ONE.
At a glance
From the company's own pages. Prices and plans change, so confirm on their site.
- What it does
- Validates and scores email addresses and offers warmup, inbox placement tests, blacklist and DMARC monitoring, and an email finder.
- Used for
- Cleaning a newsletter list and protecting delivery.
- Free plan
- Yes. The Freemium plan is $0 a month and includes 100 validation credits that refill monthly, plus 1 inbox test.
- Starting price
- Pay as you go starts at $39 for 2,000 validations. ZeroBounce ONE subscription is $99 a month.
- How it charges
- By credits. Pay as you go buys credits, and ZeroBounce ONE gives a monthly allotment; credits never expire while ONE is active.
- Works with
- 40+ integrations, including HubSpot, Salesforce, Klaviyo, Zapier, WordPress and Sendinblue, and an API in 16 languages.
- AI features
- AI-powered scoring rates addresses from 1 to 10 by likelihood of reaching a real person.
- Key features
- Email validation, email scoring, activity data, email warmup, inbox placement tests, server tests, blacklist monitoring, DMARC monitor and email finder.
- Plans
- Freemium at $0, Pay as you go from $39, ZeroBounce ONE at $99 a month with extra tools and support, and a custom Enterprise option.
- Support
- 24/7 support, live chat, documentation and a help desk, with email at support@zerobounce.net and phone lines. VIP 24/7 support comes with ZeroBounce ONE.
- Company
- In business 10+ years. SOC 2 Type II, ISO 27001, GDPR, HIPAA and CCPA compliant.
- Last checked
- October 10, 2026
Questions operators ask about ZeroBounce
Is there a free plan?
Yes. Freemium is $0 a month with 100 validation credits that refill monthly.
How much does list cleaning cost?
Pay as you go starts at $39 for 2,000 validations, and ZeroBounce ONE is $99 a month.
Do credits expire?
Credits never expire while you have an active ZeroBounce ONE subscription. Without one, expiry rules may apply.
What does it find on a list?
Invalid, disposable and inactive addresses, spam traps, abuse emails and catch-alls.
How many credits does one check use?
Validating an address uses 1 credit, and validating plus scoring the same address uses 2. Unknown results and duplicate removals cost no credits.
Can it show if subscribers are engaged?
Yes. Activity data shows subscriber engagement over the past 30 to 180 days. It is not on Freemium and is added with ZeroBounce ONE.
Does it help with sender setup as well as lists?
Yes. Besides list validation, it offers email server tests for SPF, DKIM, DMARC and DNS, blacklist monitoring and a DMARC monitor.