=== CURRENT ARTICLE (slug: interseller-vs-signalhire) ===
Interseller vs SignalHire (2026): Pricing, Features, Verdict
Interseller has shifted into a self-service model where minor bugs won't be addressed - that's effectively maintenance-mode. SignalHire's "unlimited" plan caps at 2,000 credits a month. If you're weighing these two tools in 2026, the honest answer is that neither is firing on all cylinders, and they don't even do the same thing.
30-Second Verdict
Use SignalHire for quick contact lookups via Chrome extension if you don't need sequencing and can live within credit limits.
Use Interseller only if your sequences are already running. Don't start a new contract on a product where bugs won't get fixed.
Side-by-Side Snapshot
| Type | Outreach + lookups | Contact finder | B2B data platform |
| Price | $200/user/mo | Free-~$167/mo | Free + ~$0.01/email |
| Free credits | None | 5 (10 w/ ext.) | 75 emails + 100 ext. |
| Database | Not disclosed | 850M+ profiles | 300M+ profiles |
| Email accuracy | Mixed reviews | 96% (vendor claim) | 98% verified |
| Data refresh | Unknown | Not disclosed | 7-day cycle |
| G2 rating | 4.7/5 (210) | 3.7/5 (56) | - |
| Status | Self-serve / maintenance-mode | Active | Active |
What Each Tool Actually Does
These aren't apples-to-apples. Interseller is a sourcing-plus-sequencing tool - find contacts and run automated email campaigns from one platform, built primarily for recruiters. SignalHire is purely a contact finder: Chrome extension, bulk lookups, emails and phone numbers, no sequencing. Need outreach from SignalHire? You're pairing it with Instantly or Lemlist.
Here's the thing: the fact that a Chrome extension can cut contact research from 15 minutes to under 5 seconds means extension quality matters more than raw database size. Both tools get this right. Where they diverge is everything else.
Interseller Reality Check
Greenhouse acquired Interseller on November 1, 2021 to embed its sourcing automation into their recruiting platform. Over time, the standalone product drifted into self-service limbo.
The self-service model FAQ makes this explicit: no dedicated support team, no discounts, no custom contracts, and "minor bugs will not be addressed." That's not a product with a roadmap. The G2 rating sits at a strong 4.7/5 across 210 reviews, but many of those reviews predate the self-service shift, so take the score with a grain of salt.
Pricing: $200/user/month for the Recruiter plan - the only plan available to new users since April 2024. You get 250 lookups per user and email sequence sending. No discounts. Some legacy customers historically paid around $100/month on older plans, but new signups are locked into the $200 tier.
Woodpecker's blog claims Interseller can only be purchased through Greenhouse, though Interseller's own help center still describes a self-serve subscription. Either way, starting now is a gamble.
Interseller caps you at 250 lookups per seat. SignalHire's "unlimited" plan stops at 2,000. Prospeo has no fair-use caps, refreshes every 7 days, and verifies emails at 98% accuracy - all starting at roughly $0.01 per email with no contracts.
Stop paying maintenance-mode prices for stale data.
SignalHire in Practice
We've tested the SignalHire extension and it's genuinely fast - that's the consistent praise across G2, SoftwareAdvice, and Trustpilot. The 850M+ profile database is large, and the free plan lets you kick the tires before paying. Team plans include unlimited users, so you're paying for credits, not seats.
The problems are real, though.
Those "unlimited" credits are capped at 2,000/month under a fair usage policy - read the fine print before you commit annually. Data accuracy is inconsistent: one Reddit recruiter noted SignalHire returned "a ton of older numbers" including an Alaska cell for someone who'd never been in Alaska. The same thread flagged the Loxo integration as something that "does not work that well." Review scores tell the story: 3.7/5 on G2 with complaints about limited credits and outdated data, 3.8/5 on Trustpilot with 73 reviews citing recurring billing disputes, and 4.3/5 on SoftwareAdvice where one reviewer flagged an almost-$500 auto-renewal they didn't authorize. The Reddit consensus? "Good lookup wise but a little pricy."
If you’re evaluating other options in the same category, it’s also worth comparing SignalHire against other email finder tools and broader SDR tools that bundle prospecting with outreach workflows.
Pricing Compared
| Interseller | SignalHire | Prospeo | |
|---|---|---|---|
| Free tier | None | $0 (5-10 credits) | 75 emails + 100 ext. |
| Entry paid | $200/user/mo | ~$39/mo (phones, annual) | From $0.01/email |
| Full access | - | ~$167/mo (emails + phones, annual) | Credit-based, no contracts |
| Credit cap | 250 lookups/user | 2,000/mo (fair use) | No fair-use cap |
If you're running 500+ lookups monthly, Interseller's 250/user limit means multiple seats at $200 each, and SignalHire's fair usage cap starts to pinch. Neither scales cheaply.
If you’re building a more scalable outbound motion, it helps to map your stack to proven sales prospecting techniques and a repeatable lead generation workflow.
Final Call
Between these two, SignalHire wins by default - because Interseller is effectively maintenance-mode software with no dedicated support and no minor-bug fixes. That isn't a ringing endorsement. It's just math.
- Quick contact lookups? SignalHire's free tier works for light use.
- Sequencing and outreach? Neither tool. SignalHire doesn't do it; Interseller is too risky to build on.
- Already on Interseller? Keep it running, but have a migration plan ready.
In our experience, maintenance-mode tools break at the worst possible time. Plan accordingly.
A Stronger Alternative
Prospeo covers the contact-finding use case better than either tool - and the numbers back that up. We're talking 300M+ professional profiles, 143M+ verified emails, and 125M+ verified mobile numbers, all on a 7-day data refresh cycle with 98% email accuracy. GDPR compliant, self-serve, no contracts.
The free tier gives you 75 verified emails and 100 Chrome extension credits monthly with no credit card required. Paid plans scale from roughly $0.01 per email, with native integrations into Salesforce, HubSpot, Lemlist, Instantly, and Clay. Pair it with any sequencer and you've got a stack that's fresher, more accurate, and cheaper than either option in this comparison.
If you want to sanity-check data quality before you switch, start with a quick pass on data enrichment services and basic email deliverability hygiene.
Neither tool in this comparison gives you fresh, verified data you can trust at scale. Prospeo's 300M+ profiles, 143M+ verified emails, and 125M+ mobile numbers refresh weekly - not whenever a vendor gets around to it. Pair it with Instantly, Lemlist, or any sequencer you already use.
Get 75 free verified emails and 100 extension credits - no credit card required.
FAQs
Is Interseller still supported in 2026?
Barely. Interseller moved to a self-service model with no dedicated support and no fixes for minor bugs. The product still functions, but there's no active development. Treat it as maintenance-mode software and have a migration plan ready.
Is SignalHire "unlimited" actually unlimited?
No. The fair usage policy caps at 2,000 credits per month, even on plans marketed as "unlimited." Check your monthly lookup volume against that cap before committing to an annual plan.
Which tool is better for recruiting outreach sequences?
Neither in 2026. Interseller combined contact finding with sequencing but is now maintenance-mode. SignalHire doesn't offer sequencing at all. Your best bet is pairing a dedicated contact finder with a standalone sequencer like Instantly or Lemlist.
What's a good free alternative to both tools?
Prospeo's free tier includes 75 verified emails and 100 Chrome extension credits monthly - far more generous than SignalHire's 5-10 free credits and Interseller's zero. No credit card required, and data refreshes every 7 days so you're not working with stale contacts.