CASE STUDY

InStream

InStream Group connects businesses with decision-makers through B2B
lead generation. Poor verification tools caused data issues, high bounce rates,
and wasted outreach. With Bouncer, they ensured clean lead lists
and reliable email validation.

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50 million

Email addresses verified in the past year

200,000

Emails verified daily

50%

Of emails identified as undeliverable

About InStream

Instream Group drives B2B lead generation, helping businesses connect with key decision-makers. Targeted email outreach fuels their success, making clean and verified email lists essential.

Inconsistent verification tools created setbacks, forcing constant provider switches and leading to unreliable data. Finding a solution that stayed accurate over time became a priority. Instream Group needed stability to keep outreach effective and operations smooth.

The Challenge

Unreliable verification & damaged deliverability

Before integrating Bouncer, InStream Group experienced:

Declining verification quality

Previous providers degraded over time, leading to inconsistent results and unreliable data, as well as damaged sender reputation.

Frequent vendor switching

InStream had to constantly search for new providers, adding complexity to their workflow.

The Result

Instream Group needed a verification solution, and Bouncer delivered immediate results:

Fewer bounces

Bouncer’s real-time verification keeps bad emails out, protecting sender reputation.

Prevents undeliverable emails from reaching inboxes
Ensures outreach lands where it should

Catch-all email verified

Bouncer identifies real contacts in catch-all emails, keeping valuable leads in the pipeline.

Identifies real contacts that other tools miss
Maximizes deliverability for lead generation

Hands-free integration

Bouncer fits into existing systems and works in the background.

Connects effortlessly with existing systems
Runs without manual adjustments

Conclusion

↑50 Million+ emails verified

For any business that depends on accurate email lists, Instream Group’s success shows the value of having the right email verification partner. Bouncer delivers the consistency needed to keep lead data reliable and prevent wasted outreach. Bounce rates drop, emails land where they should, and outreach stays on track.

Wojciech Cebula

Vice President of InStream Group

“Bouncer gives us something we couldn’t get anywhere else — consistent, reliable verification at scale. It just works in the background, no headaches, no surprises. Our bounce rates dropped, our leads stayed clean, and we finally stopped switching providers.”

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