Bouncer

Email verification done right. We take care of your email lists, so you can focus on your business!

Email & Phone Validation
★★★★★ 4.9
2017 Founded
51-100 Employees
5,000+ companies Customers
Wroclaw, Poland Headquarters
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Quick Facts

✓ Free Trial
Website
usebouncer.com →
Starting Price
8
Pricing Model
usage-based
Free Trial
unknown days
Company Type
private
Social
LinkedIn Twitter/X

About Bouncer

Bouncer is a Poland-based SaaS company focused on accurate, privacy-compliant email verification and deliverability tooling. Founded in 2017 and headquartered in Wroclaw, it provides both a self-service web app and developer-friendly APIs to validate email addresses at scale and in real time. sj.linkedin.com The product is designed to reduce bounces, protect sender reputation, and keep CRMs, ESPs, and SaaS user databases free of invalid, risky, or toxic email addresses. g2.com

Over time Bouncer has expanded from a simple list-cleaning tool into a broader email deliverability suite. In addition to bulk and real-time verification, it offers Bouncer Shield for form protection, a Deliverability Kit for inbox placement testing and blocklist monitoring, a Toxicity Check scoring engine, company data enrichment, and Email Engagement Insights that surface how active recipients are in their inboxes. usebouncer.com Their platform emphasizes fairness and transparency: credits never expire, duplicates and “unknown” results are not charged, and verification outputs include rich status, reason, and domain/account metadata to guide routing and suppression decisions. usebouncer.com

Security and reliability are central to Bouncer’s positioning. The service is architected around EU-based infrastructure, designed to be GDPR compliant by default, and anonymizes email addresses in logs with automatic deletion of stored verification results after a short retention period. usebouncer.com Public benchmarks and third‑party reviews highlight high accuracy (including deep catch‑all verification for Google Workspace and Microsoft 365), throughput up to hundreds of thousands of emails per hour, and a strong uptime track record. g2.com

Bouncer serves a global customer base spanning SaaS vendors, marketing and lead-gen agencies, B2B sales teams, digital health companies, and education and nonprofit organizations. Case studies and review platforms show adoption from small businesses through mid-market and enterprise teams that embed Bouncer into signup flows, outbound engines, and marketing stacks via native integrations or no‑code automation tools. usebouncer.com

Key Features

Bulk email list verification - Upload and clean large CSV lists with clear deliverable, risky, undeliverable, and unknown classifications for each address.

Real-time email verification API - Validate addresses at point of capture in signup, lead, or checkout forms using low-latency synchronous endpoints.

Bouncer Shield form protection - No-code form protection that blocks invalid, disposable, malicious, or fraudulent emails (and abusive IPs) before they enter your systems.

Batch and batch-sync APIs - Asynchronous and synchronous batch APIs to process large datasets with high throughput while keeping application latency predictable.

Free list sampling & bounce estimate - Sample a portion of a list for free and get a projected bounce rate so you know whether full cleaning is needed.

Toxicity Check - Scores each address on a 0-5 scale for toxicity (e.g., spam traps, complainers, breached accounts) to support advanced suppression rules.

Deliverability Kit - Runs inbox placement tests across providers, checks SPF/DKIM/DMARC, and monitors blocklists to catch deliverability issues early.

Company data enrichment - Enriches contacts with publicly available company data to improve segmentation and downstream marketing performance.

Email Engagement Insights - Surfaces last open, click, reply, unsubscribe, and bounce events so you can prioritize active inboxes and prune inactive ones.

AutoClean automations - Continuously monitors and cleans connected ESP/CRM lists so databases stay fresh without manual exports and imports.

Rich verification output - Returns detailed reason codes, domain and mailbox characteristics (accept-all, disposable, role, full mailbox), provider info, and scoring.

High coverage and deep catch-all handling - Specialized checks for difficult domains (e.g., Google Workspace, Microsoft 365) to minimize unknown results.

GDPR-first security model - EU-only data centers, hashed/anonymized data in logs, and automatic deletion of stored results after a defined retention window.

Team & organization management - Enterprise features for multi-team setups, centralized credits, shared history, and integration management.

Pros & Cons

👍 Pros

  • Very easy-to-use interface and workflow for uploading, verifying, and exporting cleaned lists, even for non-technical users.
  • High accuracy and fast processing with consistently low bounce rates and a small share of unknown results, including for catch-all domains.
  • Flexible, transparent pay-as-you-go pricing with credits that never expire, plus fair top-up model appreciated by small teams.
  • Rich verification output and toxicity scoring that make it easy to decide which risky or unknown addresses to keep or suppress.
  • Responsive, helpful support team and clear API documentation that make integrations and troubleshooting straightforward.

👎 Cons

  • Some reviewers feel pricing can be a bit high at very large volumes compared with a few low-cost competitors.
  • Occasional false positives or conservative classifications where valid addresses are flagged as undeliverable or risky.
  • A few users would like more native integrations, deeper analytics and reporting, and clearer guidance on interpreting "risky" results.

User Reviews

G2
4.8
★★★★★
Capterra
4.9
★★★★★
TrustRadius
10.0
★★★★★

Integrations

AWeber Brevo Constant Contact ConvertKit GetResponse HubSpot Klaviyo Mailchimp MailerLite Moosend Pipedrive Lemlist Woodpecker User.com QuickMail Make Zapier Pabbly Integrately RapidAPI Apollo.io Shopify

Best For

Company Size

smb mid-market enterprise

Industries

SaaS Technology Marketing & Advertising B2B Lead Generation Digital Agencies E-commerce

Use Cases

Bulk email list cleaning before large marketing campaigns or newsletters Real-time validation on signup and lead capture forms to prevent typos and fake accounts Protecting SaaS free trials and onboarding flows from disposable and fraudulent emails Cold email outreach and sales prospecting with lower bounce rates and better domain health Ongoing CRM and ESP hygiene via automated list cleaning workflows Deliverability testing, blocklist monitoring, and authentication checks for critical senders

FAQ

What is Bouncer?

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Bouncer is a SaaS platform that specializes in email verification and deliverability. It lets you upload lists or connect via API to validate addresses in bulk or in real time, removing invalid, risky, and toxic emails before they harm sender reputation or waste campaign budget. The product also offers auxiliary tools like Bouncer Shield for form protection, a Deliverability Kit, toxicity scoring, data enrichment, and Email Engagement Insights, all built on EU-based, GDPR-compliant infrastructure. usebouncer.com

How much does Bouncer cost?

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Bouncer uses a pay-as-you-go pricing model for email verification, with a minimum purchase of 1,000 credits for $8 and discounts as volume increases; credits never expire and you are not charged for duplicate or unknown results. For ongoing deliverability monitoring, the Deliverability Kit starts at $25 per month for 250 test emails and 10 monitored IPs/domains, with Standard, Pro, and custom Enterprise plans available at higher volumes. Enterprise and very high-volume deals are quoted via sales for both verification and deliverability products. usebouncer.com

What are the main features of Bouncer?

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Core Bouncer features include bulk list verification, real-time verification APIs, and Bouncer Shield for protecting signup and lead forms. On top of that, it offers free list sampling and bounce estimation, a Toxicity Check scoring engine, a Deliverability Kit with inbox placement and blocklist monitoring, company data enrichment, and Email Engagement Insights that reveal how active recipients are in their inboxes. The platform also provides rich result metadata, strong security controls, and native integrations with many ESPs, CRMs, and no-code automation tools. usebouncer.com

Who are Bouncer's main competitors?

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Bouncer competes with other dedicated email verification services and broader deliverability platforms. Common alternatives evaluated alongside Bouncer include ZeroBounce, NeverBounce, Emailable, BriteVerify (Validity), Clearout, and Kickbox. Selection typically depends on data residency requirements, pricing at a given volume, breadth of deliverability features, and fit with an organization's existing ESP or CRM stack. g2.com

Is Bouncer good for small businesses?

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Yes. Bouncer's credit-based pricing, credits that never expire, and simple web app make it accessible for small businesses that only need to clean lists occasionally or run smaller outbound programs. Many SMB reviewers highlight its ease of use, transparent pricing, and the ability to top up credits as needed instead of committing to large subscriptions. At the same time, its API, AutoClean, and enterprise features mean it can scale with a business as sending volumes and integration needs grow. capterra.com

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