Bounceban

BounceBan is an email verification service built around a single, well-defined problem: determining the true deliverability of catch-all and Secure Email Gateway (SEG) protected addresses — the class of business emails that most verification tools flag wholesale as "risky." On domains configured to accept all mail (catch-all) and on companies whose mail flow runs through gateways like Proofpoint, Mimecast, or Barracuda, standard SMTP probing returns a clean "250 OK" for every address, valid or not. That is why most verifiers lump these addresses into an unactionable "risky/unknown" bucket. BounceBan's core pitch — a vendor claim, not an independently verified result — is that its proprietary algorithms can reliably resolve the true deliverability of 85~95% of catch-all, greylisted, or SEG-protected emails with 97%+ accuracy, without ever sending an email to the recipient (homepage claim; the knowledge base phrases the same guarantee as 83%+ resolvable at 97%+ accuracy). For a cold-outreach or CRM-hygiene workflow, the practical difference is significant: instead of discarding every catch-all contact, users get a deliverable/undeliverable verdict on most of them, which converts a dead segment of the list into usable pipeline.

How it works and what it verifies

BounceBan verifies all email types — catch-all and non-catch-all alike — and claims even higher accuracy on non-catch-all addresses because it uses a wider range of signals than typical services. Unlike verifiers that rely primarily on SMTP testing (and some that verify by actually sending messages), BounceBan states that SMTP results are only one of many signals it weighs, since modern mail systems (Office 365, Google Workspace, SEGs) can be configured to suppress non-delivery reports for unknown senders or ex-employees, which makes "no bounce" an unreliable validity indicator. The company states its verification process is non-intrusive and GDPR compliant precisely because it never sends email to the address being checked. The vendor's knowledge base is refreshingly candid about the limits: it acknowledges the service is "not perfect," reports an average real-world accuracy of around 97% in its own testing, and asks users to flag mistakes through a Report Problem link. Addresses that cannot be reliably resolved are marked "risky" rather than forced into a verdict.

Product surface

The product covers four main modes. Single email verification is free forever in Free Mode — unlimited, with no credits consumed — and is explicitly positioned as a try-before-you-buy hook for the paid modes. Bulk verification lets users upload a list and process it concurrently, with the vendor noting most verifications complete in seconds while a small percentage take one to six minutes. Sync is a separately billed subscription that re-verifies emails in connected CRMs (a "growing list" that includes HubSpot) daily and can take action on failures, such as unsubscribing, removing from the list, or removing the contact from the CRM; it auto-upgrades and downgrades tiers to match monthly unique-email volume. Finally, the REST API offers single, bulk, and "waterfall" endpoints designed for synchronous single-request verification inside automation tools like Clay and n8n. API documentation is unusually thorough: a 15-second single-verify timeout with async polling or webhook fallback, free retries within 30 minutes of an initial request, a 90-day window for free result lookups by verification ID, and an optional disable_catchall_verify flag that limits checks to basic SMTP. The integration surface also includes Google Sheets, generic HTTP request nodes, ChatGPT GPTs, and plugins for Claude Code and OpenClaw — a notably automation-first posture that matches how the tool is actually used in modern GTM stacks, where verification typically runs as one node in a larger lead-enrichment waterfall. Enterprise buyers get SSO support (SAML 2.0 and OpenID Connect via Microsoft Entra ID, Okta, and Google Workspace) and custom pricing above one million credits.

Pricing

BounceBan uses a prepaid credit model: one credit per successful verification in Single (Premium Mode), Bulk, and API. Per the official pricing page (verified 2026-10-31), credit packages range from 10,000 to over 1,000,000 credits, purchasable either pay-as-you-go or on a monthly subscription at 15% off. At the entry tier that works out to roughly $40 per 10,000 credits pay-as-you-go (about $0.004 per credit) or $34 per 10,000 on subscription (about $0.0034 per credit), with the per-credit cost declining on higher-volume tiers; the interactive calculator on the pricing page governs the final price, and packages above one million credits require contacting sales. Two policies stand out as buyer-friendly. First, unused credits roll over and never expire on both purchase options, removing the burn-down pressure of use-it-or-lose-it monthly allocations. Second, the free tier is genuinely functional rather than a crippled demo: unlimited single checks at no cost, per the vendor's knowledge base, there are no verification-result differences between Free Mode and Premium Mode — the only stated difference is priority: during busy hours Free Mode requests may be queued for a few seconds while Premium Mode gets priority processing. The Sync feature is billed separately by the number of unique emails verified per month, and its price ladder is not published as a static table on the public pricing page.