Interseller vs Tomba: An Honest Comparison
This comparison shouldn't really exist. Interseller is a recruiting outreach tool that Greenhouse acquired on November 1, 2021 and has slowly let fade into maintenance mode. Tomba is a budget email finder with a free tier and a credit system that takes a minute to understand. They overlap on "finding emails," but they're not substitutes in the way most people mean when they search this.
Let's get into what actually matters.
30-Second Verdict
Pick Interseller only if you're a recruiting team already running sequences inside it and ripping it out would be painful. It's in maintenance mode, and the value is rough: $200/user/month for 250 lookups per user.
Pick Tomba if you want cheap domain-level discovery and can live with credit math that gets weird fast - especially if you do a lot of domain searches.
Here's the thing: if your deal sizes are modest and outreach volume is low, paying $200/seat for Interseller in 2026 is lighting budget on fire.
What Is Interseller?
Greenhouse acquired Interseller in November 2021 and said there'd be no immediate change to the service. Fast forward to 2026, and it's clearly not a growth product. Interseller moved to a self-service support model by the end of 2024, and the message is blunt: don't expect minor bugs to get fixed, and don't expect a roadmap.
Pricing is the other gut punch. The Recruiter plan runs $200/user/month and includes 250 lookups per user - about $0.80 per lookup. G2 also lists an Agency plan at $600/month for 3 users, which lands you in the same $200/seat neighborhood.
On reviews, Interseller still looks strong at a glance: 4.7/5 on G2 across 210 reviews. But many of those reviews are from earlier eras of the product. The recurring theme in more recent feedback is simple - lookup accuracy isn't consistent, and when something breaks, you're largely on your own. We've run the per-lookup math on a lot of email tools, and $0.80/lookup is among the worst value ratios you'll see outside of enterprise suites.
One useful reality check from r/recruiting: people have praised Interseller's campaign workflow - especially A/B testing - over Gem for certain outreach setups. That's the best argument for staying. If your team already has sequences, templates, and habits baked into Interseller, switching isn't "just changing an email finder." It's ripping out a workflow.
What Is Tomba?
Tomba is a B2B email finder and verifier with Domain Search, Email Finder, Email Verifier, a Chrome extension, and bulk lookup. It advertises a database of 450M+ emails across 76M domains, and it's actively maintained.
The free tier is genuinely useful: 25 searches and 50 verifications per month.
Pricing is where you need to pay attention because you'll see different numbers depending on where you look. On G2's pricing listing from late 2024, Tomba tiers were shown at $39/month (Starter) scaling up to $389/month (Enterprise). On Tomba's official pricing page, the paid tiers start at $588+ on the low end (Basic) and scale up through Growth, Pro, and Pro Plus, with custom plans available via sales. The discrepancy is confusing, and we haven't found a clean explanation for it.
Now here's the part that trips people up: Domain Search consumes 1 search per 10 emails returned. That sounds fine until a single domain returns 200 emails and you burn 20 searches in one shot. In our experience, heavy domain searchers blow through "headline" quotas much faster than expected.
Also worth knowing: Tomba's Email Verifier skips personal emails like Gmail and Outlook, plus disposable addresses - and those skipped emails aren't counted against your verifications. That's not necessarily bad, but it means Tomba's verifier isn't designed to handle every email type.
On sentiment, Tomba's G2 rating is 4.7/5 across 25 reviews, and people like the UI and speed. Trustpilot is rougher at 3.8/5 with 23 reviews, where specific complaints about outdated data and frustration with correcting information come up repeatedly. There's also a gripe that shows up in user feedback roundups: Tomba often doesn't find Gmail addresses - even when they're visible on a site - and it doesn't reliably pull emails straight off webpages. That matters a lot for recruiters and anyone chasing personal emails.
Bottom line: Tomba is a decent budget finder for company-domain emails. If you need personal emails or you expect "website in, emails out," you'll feel the ceiling quickly.
Interseller charges $0.80 per lookup on a product in maintenance mode. Tomba's domain-search math burns through credits faster than you expect. Prospeo gives you 98% verified emails at ~$0.01 each - refreshed every 7 days, not whenever someone gets around to it.
Stop overpaying for emails that bounce. Start with 75 free lookups.
Head-to-Head Feature Comparison
| Dimension | Interseller | Tomba |
|---|---|---|
| Primary use | Recruiting outreach | B2B email finding + verification |
| Database size | Not disclosed | 450M+ emails |
| Entry price | $200/user/mo | Free; paid from ~$39-$588/mo |
| Email accuracy | Inconsistent in reviews | Mixed; no independent benchmark |
| Chrome extension | Yes | Yes |
| Outreach sequences | Yes | No |
| Review volume | 210 G2 reviews | 25 G2 reviews |
| Product trajectory | Maintenance mode | Active development |
They overlap on "look up an email," but they're built for different jobs. Interseller is a recruiter workflow tool that happens to include lookups. Tomba is primarily discovery and verification with exports, bulk workflows, and API access - but it's not a sequencing platform.
For accuracy expectations, the Dropcontact benchmark that tested 15 tools on 20,000 real contacts found effective enrichment rates ranging from 31% to 55%. Neither Interseller nor Tomba was included, so don't assume either one is magically above the pack without proof.
Key Differences That Matter
Workflow vs. Utility
Interseller is built for sourcing-to-sequence: find a contact, enroll them, track replies, and keep the recruiting motion moving. Tomba is a utility - find, verify, export. If you need sequences, Tomba isn't a replacement. It's an add-on you'd pair with a separate outreach tool.
If you're evaluating a broader stack, it helps to compare SDR tools and sequence management options side-by-side.
The Gmail Problem
Recruiters often need personal emails. Tomba has a real reputation for missing Gmail addresses even when they're publicly listed, and it doesn't reliably pull emails straight off a website the way people expect. If personal emails are central to your sourcing, that's not a small limitation - it's the whole game.
If this is your pain point, you may want a workflow that starts with name to email and then validates deliverability with an email deliverability guide mindset (not just "did the tool return something").
Cost Per Lookup
Interseller at $200/month for 250 lookups is expensive even before you factor in maintenance-mode risk. Tomba is cheaper on paper, but domain-search counting can make the effective cost swing wildly depending on how you use it. A team doing 50 domain searches per week on large companies could burn through a month's quota in days.
If you're trying to keep bounces down while scaling outbound, it’s worth tracking email bounce rate and using a dedicated verifier (see Bouncer alternatives).
If Neither Fits: Consider Prospeo
If your actual need is "give me verified emails that won't torch deliverability," neither Interseller nor Tomba is the cleanest answer.
Prospeo delivers 98% email accuracy with a 7-day data refresh cycle across 143M+ verified emails and 300M+ professional profiles. It's built for self-serve: no contracts, no sales calls, and pricing that works out to about $0.01 per email. The free tier includes 75 verified emails per month plus 100 Chrome extension credits, so you can test it without procurement theater.
Where it really separates from both tools in this comparison is data freshness. Most providers refresh on a 4-6 week cycle; Prospeo refreshes every 7 days with a proprietary 5-step verification process that includes catch-all handling, spam-trap removal, and honeypot filtering. That's why teams like Snyk cut bounce rates from 35-40% to under 5% after switching, generating 200+ new opportunities per month. For teams that want to go deeper than one-off lookups, there's also database-style prospecting with 30+ filters including buyer intent powered by Bombora, technographics, job changes, and headcount growth signals.
If you're building repeatable outbound, pair this with proven sales prospecting techniques and a clean lead generation workflow.
Neither Interseller nor Tomba publishes an independent accuracy benchmark. Prospeo's 98% email accuracy is backed by a 5-step verification process, catch-all handling, and spam-trap removal - across 143M+ verified emails and 300M+ profiles. No contracts, no sales calls, no credit math that punishes domain searches.
Get emails that actually land - starting at $0.01 per verified address.
FAQ
Is Interseller still active in 2026?
Yes - you can still subscribe, but it's firmly in maintenance mode. Self-service support since late 2024, no visible roadmap, and limited expectation of bug fixes. You're paying $200/user/month for a product Greenhouse isn't investing in.
Does Tomba have a free plan?
Yes. You get 25 searches and 50 verifications per month for free. It's enough to test accuracy and workflow, but domain searches burn through your plan quickly because Tomba counts 1 search per 10 emails returned.
Is this a fair comparison?
Only partially. Interseller is an outreach and sequencing tool for recruiting workflows. Tomba is an email finder and verifier. If you need sequences, Interseller wins by default. If you only need discovery, Tomba is the closer fit - but neither leads on accuracy.