Jet Leads Pro vs Mattermark: One of These Tools Is Dead
You're comparing two B2B data tools where one was reported shutting down after a 2017 acquisition. Mattermark raised $17M+, covered 4 million companies, then sold to FullContact for under $1M. Jet Leads Pro is technically alive but has zero independent reviews on any major platform. Skip both.
What Is Jet Leads Pro?
Use this if you want an all-in-one SMB marketing suite bundling lead enrichment, email campaigns, chatbots, and SEO content tools. The vendor lists an Ultimate plan at $79/mo with unlimited users - aggressive pricing for the feature set advertised, with a claimed 15M+ companies and 700M+ contacts.
Here's the problem: no ratings on G2, Capterra, or Trustpilot. We've seen tools with big contact counts and thin accuracy before, and in our experience, platforms that skip independent review sites either haven't been around long enough or have something to hide. Without third-party validation, you're flying blind on the metric that matters most - deliverability.
What Was Mattermark?
Mattermark launched in 2012 as a startup intelligence platform for VCs and sales teams who needed private-company growth signals. It tracked 4 million companies across 80+ data fields and offered Salesforce integration, a Chrome extension, Google Sheets/Excel exports, and an API. Historical pricing ranged from $49/mo on annual contracts to $999/mo for API-heavy plans, after initially charging $200-500/mo for self-serve access with a 14-day free trial.
The data quality got called out publicly. One Hacker News user described the database as "terribly outdated" during a trial, noting that the "show contact info" feature simply didn't work. Crunchbase, PitchBook, and CB Insights all offered deeper datasets with better funding behind them, and Mattermark couldn't keep up.
In December 2017, Mattermark sold to FullContact for under $1M total - with under $500K in cash earmarked for the shutdown. A 2019 blog post claimed Mattermark had "returned," and G2 still shows a pricing page with 0 reviews. Treat it as defunct.
One tool is dead. The other has zero reviews. Meanwhile, Prospeo delivers 300M+ profiles at 98% email accuracy on a 7-day refresh cycle - independently validated by 15,000+ companies. Snyk's 50 AEs dropped bounce rates from 40% to under 5%.
Stop gambling on unverified data. Get 75 free emails today.
Side-by-Side Comparison
| Feature | Jet Leads Pro | Mattermark |
|---|---|---|
| Status | Active | Shut down after 2017 sale |
| Database | 700M+ (vendor claim) | 4M companies, 80+ fields |
| Email finding | Included | "Contact Information" beta; described as broken |
| Free trial | 7-day | 14-day (historical) |
| Integrations | Not confirmed | Salesforce, Google Sheets/Excel, API |
| Pricing | $79/mo | $49-$999/mo (historical) |
| G2 reviews | None | 0 reviews |
One tool is active with unverified claims. The other is a historical footnote.
The Verdict
Jet Leads Pro wins by default - its competitor is dead. But winning against a defunct tool isn't a ringing endorsement. Let's be honest: if you landed on this comparison, you need a modern B2B data platform that's current, accurate, and easy to validate.
If you're building a stack around outbound, start with a sales prospecting database you can actually test and verify.
Stop evaluating tools that aren't actively maintained and independently reviewed.
What to Use Instead in 2026
Prospeo is the straightforward answer for verified B2B contact data. It covers 300M+ professional profiles with 98% email accuracy and a 7-day data refresh cycle, compared to the 6-week industry average. You get 30+ search filters including buyer intent across 15,000 topics via Bombora, a Chrome extension used by 40,000+ professionals, and CRM enrichment returning 50+ data points per contact at a 92% API match rate. The free tier includes 75 verified emails per month - no credit card required.
If you're comparing vendors in this category, see our breakdown of B2B company data providers and where accuracy usually breaks.
Real results tell the story better than feature lists. Snyk's 50 AEs cut bounce rates from 35-40% to under 5% and grew AE-sourced pipeline 180%. Stack Optimize built to $1M ARR with 94%+ deliverability and zero domain flags across all clients. Those aren't hypotheticals - they're the kind of numbers we've seen repeatedly from teams that switch from unreliable data sources.
If you're sending cold outbound at any real volume, you also need to manage email bounce rate and sender reputation like a first-class metric.
Crunchbase is the move if your use case is specifically startup and funding intelligence - the niche Mattermark originally targeted. Pro plans start at $49/mo, and it's built for tracking funding rounds, acquisitions, and leadership changes. If that's all you need, it does the job well.
Apollo works for budget outbound teams that prioritize volume over precision. Expect a free plan and paid plans starting around $49/mo per user. Email accuracy runs lower (~79%) than Prospeo's 98%, so factor in bounce risk and the downstream cost of burning your sending domain. If you're shopping this tier, compare options in our guide to outbound lead generation tools.
Mattermark's contacts were called 'terribly outdated.' Jet Leads Pro has zero third-party reviews. Prospeo's 5-step verification delivers 98% accuracy at $0.01/email - with 30+ filters, intent data, and a Chrome extension used by 40,000+ pros.
Replace dead tools with data that actually connects you to buyers.
FAQ
Is Mattermark still available in 2026?
No. Mattermark sold to FullContact in December 2017 for under $1M and shut down. G2 still shows a pricing page with 0 reviews, which is misleading. For any team evaluating B2B data tools today, look at actively maintained alternatives like Prospeo or Crunchbase instead.
Does Jet Leads Pro have independent reviews?
As of 2026, no ratings exist on G2, Capterra, or Trustpilot. The vendor claims 700M+ contacts, but without third-party validation, accuracy is unverifiable. If you're curious, use the 7-day free trial and test deliverability yourself before committing budget.