Finder.io vs Prospeo: One Is Shutting Down - Here's What to Know
500apps is winding down its entire suite, including Finder.io, over the next 90 days. So if you're weighing Finder.io vs Prospeo for email finding, this one has a very clear answer. The feature gap was real even before the shutdown news broke.
30-Second Verdict
Prospeo wins. It would've won on features alone - API access, 125M+ verified mobile numbers, 7-day data refresh, intent data - but the 500apps sunset makes this a non-decision. If you're still on Finder.io, contact support@500apps.com to export your data before the lights go off.
Feature Comparison at a Glance
| Feature | Finder.io | Prospeo |
|---|---|---|
| Database size | 430M+ email addresses (claimed) | 300M+ profiles, 143M+ verified emails |
| Email accuracy | Not published | 98% verified |
| Mobile numbers | Not a core feature | 125M+ |
| API | No | Yes (92% match rate) |
| Data refresh | Unknown | Every 7 days |
| Pricing | $14.99/user/mo in the 500apps bundle | Free tier + ~$0.01/email |
| Product status | Sunsetting | Active |
Finder.io claims a larger raw database, but without published accuracy numbers or an API, that count doesn't mean much.
What Is Finder.io?
Finder.io was an email finder and verifier bundled inside the 500apps suite - 50 business apps for $14.99/month. It claimed 430M+ email addresses and offered Email Finder, Email Verifier with bulk support, Domain Search, and Lead Mining. G2 gave it 4.6/5 from just 10 reviews. On Capterra, the broader 500apps suite holds a 4.4/5 from 25 reviews, though users flagged broken integrations and a steep learning curve.
Cheap didn't mean reliable. One G2 reviewer specifically asked 500apps to update the domain database at least monthly. On Trustpilot, the suite sits at 3.5/5, with complaints about broken APIs, unresponsive support, and subscription cancellation loops. Here's the thing: Finder.io never showed up in Reddit discussions about email finders - not once in the threads we reviewed. And now it's sunsetting entirely.
Finder.io never had an API, mobile numbers, or published accuracy stats - and now it's shutting down entirely. Prospeo gives you 143M+ verified emails at 98% accuracy, 125M+ direct dials, and a 92% match rate API that plugs into Clay, Zapier, and your CRM. Data refreshes every 7 days, not whenever someone files a G2 complaint.
Export your Finder.io data and run it through Prospeo - free, today.
What Is Prospeo?
Prospeo is a B2B data platform covering 300M+ professional profiles with 143M+ verified emails and 125M+ verified mobile numbers. Every record runs through a 5-step verification process - catch-all handling, spam-trap removal, honeypot filtering - and the entire database refreshes every 7 days. Most competitors refresh around every 6 weeks.
The intent data layer, powered by Bombora across 15,000 topics, turns it from a contact finder into a prospecting engine. You get 30+ search filters including technographics, job changes, headcount growth, and funding signals. Prospeo shows up in Reddit tool shortlists alongside FullEnrich and Findymail as a go-to for outbound teams.
Integrations cover Salesforce, HubSpot, Clay, Zapier, Smartlead, Instantly, and Lemlist. The API runs a 92% match rate, and the Chrome extension has 40,000+ users. Pricing starts free - 75 verified emails and 100 Chrome extension credits per month, with paid plans running roughly $0.01 per email and no annual contracts.
Key Differences That Matter
API access is the big one. Finder.io doesn't have an API. If you're building enrichment workflows in Clay, Zapier, or any custom pipeline, Finder.io simply can't participate. Prospeo's API delivers a 92% match rate, so you can automate lead enrichment at scale without manual CSV exports.
Mobile numbers change your connect rates. Finder.io doesn't position mobile number finding as a core capability. With Prospeo's 125M+ verified mobiles and a 30% pickup rate, the difference is reaching a VP directly versus leaving a voicemail on a switchboard. We've seen this gap show up in real pipeline numbers - Snyk's 50-person sales team generated 200+ new opportunities per month after switching to verified direct dials.
Data freshness is where trust lives. Remember that G2 reviewer asking for monthly database updates? Prospeo refreshes every 7 days. We've watched teams torch their sender reputation in a single week by running sequences on outdated lists. Snyk went from 35-40% bounces to under 5% after switching to fresh, verified data - and that's not an outlier result.
One note on benchmarks: a Reddit test of 2,500 contacts showed a 35.6% valid email rate for Prospeo. That's a coverage rate - how many contacts were found and verified - not a bounce rate. Important distinction.
The Verdict
This isn't a close call. Finder.io is shutting down within 90 days. Even before the sunset, comparing these two showed a clear winner across every dimension - API, mobile numbers, intent data, integrations, and data freshness. The pricing is comparable or cheaper, and you're not betting on a platform that's actively winding down.
If you want waterfall enrichment, Findymail handles bulk workflows well. Apollo.io gives you an all-in-one outreach platform with a built-in sequencer. But for accurate, verified contact data with an API you can build on? Let's be honest - the choice here is obvious.
Snyk's 50-person sales team cut bounces from 35-40% to under 5% and generated 200+ new opportunities per month with verified contact data. That's what happens when you stop relying on unverified databases and start sending to real inboxes. At ~$0.01/email with no annual contracts, the switch from Finder.io pays for itself on day one.
Stop gambling on a sunsetting tool. Get verified data now.
FAQ
Is Finder.io still available?
500apps announced a 90-day wind-down of the entire suite, including Finder.io. Contact support@500apps.com to export your data before the shutdown completes. There's no announced successor product.
Does Finder.io have an API?
No. GetApp confirms Finder.io doesn't offer an API, making it incompatible with automated enrichment workflows in Clay, Zapier, or custom pipelines. Prospeo's API returns a 92% match rate with 50+ data points per contact.
How accurate is Prospeo's email data?
98% email accuracy on verified results, backed by a proprietary 5-step verification process. In the Reddit benchmark of 2,500 contacts, the 35.6% figure represents coverage - emails found and verified - not bounce rate. Snyk cut bounces from 35-40% to under 5% after switching.