ZeroBounce's free Freemium account provides 100 validation credits monthly, one Inbox Placement Test, one Email Server Test, one Blacklist Monitor, and 10 Email Finder credits — enough for light testing but limited for serious campaigns. G2 reviewers note the free tier is useful for evaluating accuracy before committing. ZeroBounce's paid options include pay-as-you-go credits that never expire, ideal for occasional users, and the ZeroBounce ONE subscription starting at $99/month, which bundles validation credits, Email Finder searches, warmup seeds, DMARC monitoring, and a 15% discount on additional credits. G2 users highlight the subscription's rollover credits and bundled deliverability tools as key upgrade drivers.