FairValid vs ZeroBounce: Small List Pricing and Minimums

FairValid vs ZeroBounce: small lists and minimum purchases

If your list is small, the useful question is simple: what is the least you have to buy, and what does a modest batch cost? This comparison uses only the official pricing and help pages for each service, checked on 2026-11-05. FairValid publishes this article and is listed first by editorial preference. This is not an independent ranking. We read the documentation and did not run hands-on accuracy or deliverability tests, so nothing here measures how well either service verifies addresses.

Minimum purchase: the same starting point

Both services start at the same place. FairValid's one-time top-up lets you choose any whole amount from 2,000 to 1,000,000 credits. ZeroBounce's pay-as-you-go calculator states a minimum of 2,000 credits. Because the minimum is the same, neither service has an advantage here.

Neither captured page shows the exact price of a 2,000-credit purchase. Both list a price at 10,000 credits, and ZeroBounce mentions volume pricing. So we compare the quantity both pages actually show: 10,000 credits.

Comparing 10,000 credits

• FairValid: USD 19.50 one-time for 10,000 credits, excluding tax. A monthly plan with the same 10,000 credits is also listed at $19.50 per month. Monthly billing is optional. FairValid says a subscription is not required for one-time purchases.
• ZeroBounce: pay-as-you-go at 10,000 credits shows $0.0129 per credit, or $129. The captured page doesn't say whether tax is included.

ZeroBounce also offers 15% off with a ZeroBounce One™ subscription. If you apply 15% to the $129 pay-as-you-go price, the discounted credit subtotal comes to about $109.65 for 10,000 credits. The 15% discount is clearly stated. What the capture doesn't show is the subscription's own fee or what it includes, so the total cost of that bundle can't be worked out.

FairValid pricing page, captured 2026-11-05.

Where FairValid has an evidenced advantage

Lower documented price at 10,000 credits. On these captures, FairValid's $19.50 one-time price is well below ZeroBounce's $129 pay-as-you-go price. It is also below the discounted credit subtotal of about $109.65, before any ZeroBounce subscription fee is added. Tax treatment may differ. FairValid's price excludes tax, and ZeroBounce's capture doesn't say.

A larger free monthly allowance. The original FairValid account gets 300 free credits each month on its signup date. Free credits are used first and don't roll over, and additional workspaces don't get an extra free allowance. ZeroBounce's Freemium tier lists 100 validation credits per month. For a very small list, the higher free allowance may cover more of your checks.

FairValid billing rules worth knowing

The rules below are documented for FairValid. ZeroBounce's capture covers some of these topics and not others. Where it says nothing, we don't treat that as proof that ZeroBounce works differently, so we don't count these rules as advantages.

• A completed Valid or Invalid result costs one credit. Unknown and unresolved Catch-all results have zero net charge, and credits held for them are released or returned. Pending isn't a final result. Technical failures and unprocessed work also have no net charge, and they aren't relabeled as Unknown.
• If one imported list contains duplicate rows, they are checked once and mapped back to the source rows without an extra charge for the repeats. This applies only within one import. Separate submissions and future rechecks aren't promised to be free.
• FairValid's paid credits do not expire while the account remains open. ZeroBounce also says credits never expire, so this is a shared feature.
• ZeroBounce says Unknown results are free. That means it doesn't charge for them, but the page doesn't say whether credits are held first and then returned.

FairValid results help page, captured 2026-11-05.

FairValid's results guide also says a Valid result never guarantees inbox delivery. On catch-all domains, a conclusion about a single mailbox can be less certain.

Where ZeroBounce may fit better

ZeroBounce's pricing page lists features that may matter more to some teams than the price per credit:

• Credits work across several tools. Its credits can be used for Email Validation, Scoring, Email Finder and Domain Search. If you need more than validation, that flexibility could be worth paying for.
• Extras on the free tier. Freemium lists 1 Inbox Test, 1 Email Server Test, 1 Blacklist Monitor and 10 Email Finder uses alongside its validation credits. It says Freemium credits refill monthly and don't expire. The same page notes that Freemium doesn't include activity data and has no access to Warmup or DMARC monitoring.
• Account features. It lists 24/7 customer support, multiple API keys, detailed status codes, inbox placement testing and 18 validation tools as included with all accounts. It also offers enterprise pricing for more than 1 million credits.
• Accuracy claim. ZeroBounce advertises "99.6% Validation Accuracy Guaranteed". That is the vendor's own statement. We haven't tested it, and a screenshot can't show whether any service is accurate.

ZeroBounce pricing page, captured 2026-11-05.

So which suits a small list?

If you mainly need to verify a few thousand addresses and want a low documented cost for 10,000 credits, the captures favor FairValid's pricing. If you want one credit balance that also covers scoring, email finding and domain search, ZeroBounce's pricing page documents those tools. The FairValid pages used here don't cover tools like these. Neither service wins in every case, and both pages can change. Check the current quote and tax before you pay.

If you'd like to see how FairValid handles your own list, you can start with the free monthly credits and read how credits work before you buy anything.