Bouncer vs TheirStack: Data Enrichment Tool Comparison
Compare Bouncer and TheirStack side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Bouncer and TheirStack serve different data enrichment needs: Bouncer focuses on email verification, deliverability testing, and list cleaning starting at $8/mo, while TheirStack offers job and company search with technographics and buying intent data starting free at $0/mo. The right pick depends on whether you need email accuracy or company and hiring signal data.
Key takeaways
- TheirStack has a free entry tier at $0 per month, while Bouncer's entry tier starts at $8 per month on a usage-based credit system.
- Bouncer offers 9 pricing tiers compared to TheirStack's 4, giving more granularity as usage scales.
- Bouncer lists 10 integrations including HubSpot, Mailchimp, Klaviyo, and Pipedrive, while TheirStack lists 5 integrations including Clay, LinkedIn Audiences, and Zapier.
- Both tools share only one listed integration in common: Make.
- TheirStack was founded in 2021, while Bouncer's founding year is not listed.
Reviewed and updated September 5, 2026
Bouncer vs TheirStack: Data Enrichment Tool Comparison
Bouncer and TheirStack compete head-to-head in the B2B lead data and contact enrichment space. This guide compares their pricing tiers, feature sets, and integration ecosystems to help you make a confident decision.
The Quick Answer
By each vendor's own wording, Bouncer lists email verification and bouncer shield, while TheirStack lists job search and company search. A capability both offer can appear under different names, so read both feature lists below.
TheirStack offers a lower entry point at $0/mo compared to Bouncer at $8/mo.
If your priority is finding accurate contact data for target accounts, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
Bouncer is Email verification service that cleans lists in bulk or through an API and verifies addresses on signup forms in real time. Also runs inbox placement, blocklist, SPF, DKIM and DMARC deliverability tests.
TheirStack is Job posting and technographics database for sales teams. Finds companies by the technologies they use and the roles they are hiring for, and enriches a company list with technographics and buying intent.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
1,000 credits
Free
Bouncer Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| 1,000 credits | Usage-based | 1,000 to 4,999 emails |
| 5,000 credits | Usage-based | 5,000 to 9,999 emails |
| 10,000 credits | Usage-based | 10,000 to 49,999 emails |
| 50,000 credits | Usage-based | 50,000 to 99,999 emails |
| 100,000 credits | Usage-based | 100,000 to 249,999 emails |
| 250,000 credits | Usage-based | 250,000 to 499,999 emails |
| 500,000 credits | Usage-based | 500,000 to 999,999 emails |
| 1,000,000 credits | Usage-based | 1,000,000 to 2,499,999 emails |
| High-Value Pricing | Contact Sales | - |
Source: Bouncer Pricing
TheirStack Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free | Free | 50 company credits and 200 API credits per month |
| App | Usage-based | Company credit packs from 1,000 to 200,000 credits |
| API, Webhooks & MCP | $49/mo | 1,500 API credits per month |
| Datasets | Contact Sales | Jobs, Technographics and Buying intents datasets |
Source: TheirStack Pricing
Pricing Analysis
TheirStack offers the lower entry point ($0/mo vs $8/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Bouncer offers 9 pricing tiers compared to TheirStack's 4, giving you more granularity as you scale.
TheirStack includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- Email Verification
- Bouncer Shield
- Deliverability Kit
- Inbox placement tests
- IP & domain blocklist tests
- SPF and DKIM tests
- and 2 more listed below
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- and 2 more listed below
Bouncer Key Features
- Email Verification
- Bouncer Shield
- Deliverability Kit
- Inbox placement tests
- IP & domain blocklist tests
- SPF and DKIM tests
- DMARC test
- Email verification credits never expire
TheirStack Key Features
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by Bouncer
- Email Verification
- Bouncer Shield
- Deliverability Kit
- Inbox placement tests
- IP & domain blocklist tests
- SPF and DKIM tests
- DMARC test
- Email verification credits never expire
Listed only by TheirStack
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
Integration Ecosystem
Bouncer Integrations
Bouncer connects with: HubSpot, Mailchimp, Klaviyo, Brevo, Pipedrive, Make, MailerLite, GetResponse, Constant Contact, LemList.
TheirStack Integrations
TheirStack connects with: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Shared Integrations
Both tools integrate with: Make.
Integrations listed only by Bouncer: HubSpot, Mailchimp, Klaviyo, Brevo, Pipedrive, MailerLite, GetResponse, Constant Contact, LemList.
Integrations listed only by TheirStack: Clay, LinkedIn Audiences, N8N, Zapier.
Use Case Recommendations
Best Fit for Bouncer
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (10 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for TheirStack
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | Bouncer | TheirStack |
|---|---|---|
| Starting Price | Usage-based | Free |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 8 | 8 |
| Integrations | 10 | 5 |
| Founded | N/A | 2021 |
Getting Started Checklist
- Define your B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected data credits or contact lookups to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Bouncer and TheirStack both serve the B2B lead data and contact enrichment market. TheirStack offers a more accessible entry point, while Bouncer starts at $8/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit Bouncer and TheirStack for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Bouncer and TheirStack?
- Bouncer is an email verification service that cleans lists and runs deliverability tests like inbox placement, SPF, DKIM, and DMARC checks. TheirStack is a job posting and technographics database that finds companies by the technologies they use and roles they are hiring for, then enriches company lists with buying intent data.
- Which tool is cheaper, Bouncer or TheirStack?
- TheirStack has the lower entry point at $0 per month with a free tier, compared to Bouncer's $8 per month usage-based starting tier. However, Bouncer offers 9 pricing tiers versus TheirStack's 4, giving more granularity for teams that scale up their usage.
- Does Bouncer or TheirStack have more integrations?
- Bouncer lists 10 integrations, including HubSpot, Mailchimp, Klaviyo, Brevo, and Pipedrive, while TheirStack lists 5 integrations, including Clay, LinkedIn Audiences, N8N, and Zapier. The only integration both tools share is Make.
- Who should choose TheirStack over Bouncer?
- TheirStack fits budget-conscious teams that want to start free and scale up as needs grow, since it offers a $0 per month entry tier with 50 company credits and 200 API credits monthly. It also suits enterprise buyers who prefer custom pricing through its Datasets plan.
- What features does each tool list that the other doesn't?
- Bouncer lists features exclusive to its platform such as Email Verification, Bouncer Shield, Deliverability Kit, and DMARC testing, plus credits that never expire. TheirStack lists features such as Job search, Company search, Company lookup, Enrichment, Webhooks, and an MCP server not listed by Bouncer.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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