How The Operations Company Cut a
30% Bounce Rate to Just 0.5%

Junk sign-ups were contributing to a 30% bounce rate

The client operates a large self-service product platform and sends more than 10,000 emails per week, sometimes significantly more. Because people could create their own accounts, its database had accumulated junk and spam sign-ups.

Those unprotected registrations left the company with sketchy email addresses and a bounce rate of 30%.

At that level, this wasn’t as simple as cleaning the list and calling it a day. The Operations Company needed a way to improve the data and help keep it clean.

“We needed a strong tool that we could recommend to our clients that provided clean, consistent, verified data for sending lists while also providing the tools to help improve email health as a whole,” Bertolino said.

Why The Operations Company chose ZeroBounce

The team found ZeroBounce through its own research and recommendations from other companies in the industry.

The quality of data delivered is what made us gravitate toward ZeroBounce.

Anthony Bertolino, Senior Operations Manager at The Operations Company

Email validation was integral to the decision, but The Operations Company also saw added benefits in the suite of tools and monitors available on the platform.

“Additional tools such as the Blacklist Monitor and Email Warmup bring additional value,” Bertolino said. “These features, combined with the quality of email verification that ZeroBounce offers, made it a clear winner.”

Combining ZeroBounce with safeguards in HubSpot

The Operations Company used ZeroBounce to validate the client’s email data and identify which contacts to keep on its sending lists. It also put guardrails in place within HubSpot to keep invalid and suspicious addresses out of future campaigns.

“We implemented ZeroBounce validation as well as some safeguards within HubSpot itself to ensure this client was only sending emails to valid addresses,” Bertolino said.

The email validation results also helped the team identify patterns connected to junk accounts and spam sign-ups. That allowed the client to remove bad data rather than continue sending to addresses that could hurt its email performance.

“Since they are a large self-service product platform, we were seeing a lot of junk or spam sign-ups,” Bertolino said. “ZeroBounce not only helped improve their email health, but also helped us clean out the bad actors.”

Bringing the bounce rate down to 0.5%

The improvement did not happen with a single campaign. The client had been sending emails at a high volume, and it took several months of cleaner sending for its email performance to improve.

Over that period, the bounce rate fell from 30% to 0.5%.

For a client sending at least 10,000 emails every week, that meant far fewer messages going to invalid addresses. Bertolino said the lower bounce rate reflected “better overall health, cleaner send lists, and stronger deliverability.”

The client also experienced higher inbox placement, fewer spam complaints, stronger engagement, and a better sender reputation, Bertolino added.

How The Operations Company gets more from ZeroBounce

The Operations Company uses most of the ZeroBounce tools, including email validation, email scoring, Email Finder, DMARC Monitor, Blacklist Monitor, Email Testing Tools, and Email Warmup.

For Bertolino, the full suite of tools gives “the ability to improve our email health beyond just making sure the emails we send to are verified.” Blacklist Monitor and Email Warmup were the two features he singled out as especially valuable.

That broader approach helps The Operations Company support clients with a range of email and deliverability challenges. Instead of treating high bounce rates as an isolated issue, the team can address the underlying data and deliverability conditions.

Why The Operations Company gives ZeroBounce a 10 out of 10

The client’s improvement demonstrates what can happen when email validation is integrated into a broader data-quality process. ZeroBounce helped The Operations Company clean up the existing database, while safeguards in HubSpot helped keep invalid and suspicious addresses out of future sends.

The result was a reduction in bounce rate of more than 98%, from 30% to just 0.5%.

Bertolino described ZeroBounce as “one of the most impactful email marketing tools we have ever used,” giving the platform a perfect score — “10 out of 10.”

“We’re looking forward to our continued partnership,” he said.

The results at a glance

The Operations Company helped a high-volume client bring its bounce rate down from 30% to 0.5% over several months. ZeroBounce email validation helped the team identify invalid and suspicious addresses, while safeguards in HubSpot helped prevent bad data from making its way into future campaigns.

The client saw:

A bounce-rate reduction of more than 98%

Cleaner email sending lists

Higher inbox placement

Fewer spam complaints

Stronger engagement

An improved sender reputation

Start with cleaner data. ZeroBounce ONE™ gives you email validation plus tools to monitor your sender reputation and improve deliverability from one platform.