HireHub gets 52% response rates with Tomba vs. 15% with InMail alone.
How a recruiting platform turned email outreach into their highest-converting candidate channel.
How Tomba outreach and InMail compared.
The recruiting team that couldn't scale on InMail.
HireHub's talent acquisition team recruits for over 300 open roles simultaneously across their client portfolio. Their recruiters relied on InMail and generic contact forms to reach candidates, resulting in response rates under 15% and painfully slow time-to-fill metrics. With clients demanding faster placements and competitors poaching candidates first, Head of TA James Okonkwo needed a channel that could actually break through the noise.
"We went from begging for InMail replies to having candidates respond within hours."
-- James Okonkwo
Same candidates. Same recruiters. Different channel.
HireHub deployed Tomba's Email Finder and bulk verification across their entire recruiting workflow. Recruiters use the LinkedIn Chrome extension to instantly find a candidate's verified professional email while reviewing their profile. For high-volume roles, they use Tomba's bulk Domain Search to surface entire company directories and identify passive candidates. Every email is verified in real-time before outreach, ensuring GDPR-compliant, high-deliverability campaigns.
52% response rates. 10,000 candidates sourced monthly.
HireHub's outreach response rate jumped from 15% to 52% by reaching candidates directly via professional email instead of InMail. Average time-to-hire decreased by 8 days, and the team fills roles 40% faster than their industry benchmark. The built-in verification eliminated bounced emails entirely, maintaining their sender reputation across all outreach domains. Today, HireHub's 80+ recruiters source over 10,000 verified candidates per month.
Why Tomba worked for HireHub
Direct inbox access
Professional email bypasses InMail throttling and notification fatigue. Candidates actually see and respond to recruiter messages.
GDPR-compliant sourcing
Tomba's data practices meet EU privacy standards, giving HireHub's legal team confidence to scale outreach across European markets.
Bulk verification at scale
Verifying 10,000+ emails per month before outreach keeps bounce rates at zero and protects domain reputation across all sending domains.
"InMail response rates were killing us - 15% on a good day. With Tomba, we reach candidates on their professional email and get 52% response rates. It's been a total game-changer for our sourcing team."
From pilot to always-on.
What began as a trial with 10 recruiters is now embedded across HireHub's entire 80-person TA org. They're rolling out Tomba's API integration with their proprietary ATS to automatically enrich candidate profiles with verified contact information the moment they enter the pipeline.
"Every recruiter on our team has Tomba open all day. It's become as essential as LinkedIn itself." -- James Okonkwo, Head of Talent Acquisition
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