A NeverBounce alternative whose credits keep

The prices, side by side

NeverBounce's pay-as-you-go tiers against ListCheckup's packs. NeverBounce sells in dollars, ListCheckup in euros; no conversion is applied, and both exclude any applicable tax.

The expiry clause

Under NeverBounce's pay-as-you-go card sits one line worth reading twice:

"Credits expire 12 months after purchase."

Buy 25,000 credits, clean a 12,000-address list, and the remainder is on a clock — a quiet year and it is gone, paid for and unusable.

ListCheckup credits never expire, full stop. Leftover credits are not waste; they are the re-check you will run before the next campaign. This is the single largest difference between the two services, larger than the price.

The free tiers

NeverBounce gives 10 free credits at registration, once. ListCheckup gives 100 free verifications that refill back to 100 at the start of every month, no card required. Ten credits proves the buttons work; a monthly hundred is enough to actually keep a small signup flow clean without ever paying.

What each guarantee covers

NeverBounce guarantees that no more than 3% of your emails bounce — under conditions its guarantee page spells out: you must mail only the addresses marked valid, within 72 hours of cleaning, from a list of at least 500, bounces blamed on your own sender reputation do not count, and addresses at freemail providers such as Gmail, Outlook, AOL and Yahoo are excluded entirely.

Read that last condition against your own list. If you sell to consumers, most of your subscribers are at exactly those providers, and the guarantee does not apply to them.

ListCheckup does not advertise a bounce percentage. It gives every address a plain-English reason and a confidence score, marks the ones nobody can settle as undetermined, and returns the credit for those rather than charging you for a guess — NeverBounce's billing counts one credit per verification and lists no exception for results it marks unverifiable. We would rather refund the uncertainty than promise around it.

When NeverBounce is the better buy

If your list lives inside a CRM and must stay clean without anyone touching it, NeverBounce — a ZoomInfo company — is built for that: more than 80 integrations, automatic typo fixing, and a Growth plan that syncs with your stack and cleans new leads as they arrive. ListCheckup has an API and webhooks, but not that breadth of ready-made connectors. Continuous enterprise sync is their game, and they play it well.

If you are a shop or a small team cleaning a list you built yourself, a few times a year, you are the customer the expiry clause quietly bills: episodic use is exactly the pattern that leaves credits to die at month twelve.

The European difference

ListCheckup prices in euros — no dollar conversion on your card — and the servers that hold and check your list are in the European Union, with a data processing agreement on request. If your customers are European, your list never has to leave Europe to be cleaned.