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BounceBan

Verify the catch-alls others skip

Data & Discovery
For AI agents
APICapable readiness
About

What is BounceBan

BounceBan verifies email deliverability using proprietary algorithms that work without sending test messages — keeping your domain reputation intact and staying GDPR compliant. It's built for SDRs, BDRs, and marketing teams at solo operations and SMBs who are tired of treating every catch-all address as a dead end. The standout capability is its ability to identify deliverable catch-all emails with claimed accuracy above 97%, covering 85–95% of addresses that most other verifiers simply flag as risky and skip. It connects to HubSpot via a Sync feature that can run daily CRM verification automatically, triggering actions like unsubscribing or removing contacts based on results. That said, the Sync feature carries a separate subscription cost, and native CRM support beyond HubSpot is still limited — teams running Salesforce or other platforms will need to rely on the API.

Data & Discovery
Capabilities

Key features

Email verification

validates whether an address is deliverable

Native CRM integration

first-party connectors, no middleware required

Outbound webhooks

event-driven integrations

Our verdict

Vanderbuild take

For SDR and marketing teams that generate lists with heavy catch-all or SEG-protected addresses, BounceBan fills a gap that generic email verifiers leave wide open. The REST API is solid — you can wrap it into your own orchestration layer or pipe it through a Clay workflow without much friction, making it a capable building block for agentic outbound stacks even without a native MCP server. Free or near-free to start, so the risk to test is essentially zero — single verifications are free, and paid credits are usage-based with no forced commitment. The honest limitation is CRM breadth: HubSpot gets the native Sync treatment, but everyone else is on API-DIY, and the Sync subscription is a separate line item that can catch teams off guard.

Mateusz Sekta
Founder, vanderbuild
Learn more

Our Resources

The wedge

Agentic stack profile

API
REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →
Agentic readiness
Capable

Solid API access — wraps cleanly for agent use.

Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.

Stack role
Verifier

Where this tool slots into an agentic pipeline.

Plays the role of Verifier in an agentic pipeline. Use it to validate emails or phones before an agent sends or dials.

Compare

BounceBan alternatives

Tools that solve a similar problem — compared at a glance.

BounceBan(this tool)
Pricing
Freemium
Budget
$
Best for
SDR / BDR, Marketing
Readiness
Capable
API
REST
Emailable
Pricing
Usage-based
Budget
$
Best for
RevOps, Marketing
Readiness
Capable
API
REST
MyEmailVerifier
Pricing
Freemium
Budget
$
Best for
SDR / BDR, Founder
Readiness
Capable
API
REST
Answers

Frequently asked questions

Does BounceBan have a public API?

Yes — BounceBan ships a REST API. Docs: https://bounceban.com/public/doc/api.html.

How much does BounceBan cost?

BounceBan: pricing is freemium, expect entry tier ($) spend. Full pricing page: https://bounceban.com/pricing.

Who is BounceBan best for?

BounceBan is built for SDR / BDR, Marketing. Fits Solo, SMB (1-50)-sized teams.

How well does BounceBan fit an agentic sales stack?

Tier: Capable. Solid public API, no MCP yet — straightforward to wrap in your own agent tooling.