Mattermark vs Prospeo: Do These Tools Even Compete?

Mattermark vs Prospeo: Do These Tools Even Compete?

30-Second Verdict

Comparing Mattermark and Prospeo is tricky because they solve different problems. Mattermark gives you company-level research data - growth signals, funding rounds, 80+ fields per company. Prospeo gives you verified emails, mobile numbers, and intent data for outbound prospecting. If you need contact data to fill sequences, Prospeo wins and it isn't close: 143M+ verified emails at 98% accuracy, 125M+ verified mobiles, all refreshed every seven days. If you need company intelligence, Mattermark was originally built for that, but its zero-review status and stagnant public dataset numbers make it hard to recommend over Crunchbase or PitchBook.

What Happened to Mattermark?

Mattermark raised $17M+ in total funding since 2012, including a $7.3M Series B. Then in December 2017, it shut down and sold to FullContact for less than $1M - under $500k in cash, used to wind down operations. Co-founder Danielle Morrill joined FullContact as VP of Product, and the acquisition added 4M companies and 20M contacts to FullContact's identity graph.

FullContact initially signaled the product was going away, then reversed course. At some point Mattermark re-launched as an independent company, and the site is live today with pricing pages and a 14-day free trial. But here's the thing: the public dataset numbers haven't changed. It's still "4 million companies" and "20 million key contacts" - the same figures from 2018 acquisition coverage.

What Each Tool Actually Does

Pick Prospeo if you're building outbound campaigns and need verified contact data. The database covers 300M+ professional profiles with 30+ search filters - buyer intent, technographics, job changes, headcount growth - and you can start in two minutes without a sales call. If you're comparing vendors in this category, see our roundup of B2B sales intelligence tools.

Pick Mattermark if you need company intelligence: growth signals, funding data, team size trends, 80+ fields per company profile. But given its uncertain status, we'd point you toward Crunchbase (starting around $49/mo for individuals) or PitchBook (~$20-40k/year) instead. Both have active user communities and regularly updated datasets.

Skip Mattermark entirely if you're an outbound team looking for emails and phone numbers. That's not what it was built for, and the contact data it does list comes without verification guarantees. If deliverability is the priority, email verification is non-negotiable.

Feature and Pricing Breakdown

The pricing gap is stark. A five-person team on Mattermark Standard runs $245/mo minimum. That same team can start on Prospeo's free tier and scale to usage-based pricing at roughly $0.01 per email - no annual contract, no sales call required. Mattermark's Professional tier at $500/user/month approaches enterprise-level pricing without the database depth or integration ecosystem to justify it, and their API tiers run from $99/month for 1K requests up to $999/month for 20K on an annual contract.

The Trust Problem

We checked every major review platform. Mattermark has zero reviews on G2, and G2's own banner says the profile "hasn't been active for over a year." Zero reviews on Serchen too. A 120-point, 58-comment Hacker News thread from the shutdown era includes a user who tried a trial and found the database "terribly outdated" with a broken "show contact info" feature.

B2B data decays at 30-40% annually. A dataset whose public numbers haven't budged since 2018 has cycled through that decay rate multiple times over. In our experience, datasets that stop growing are datasets that stop being useful - and without independent validation, you're trusting numbers from a product that sold for less than $1M eight years ago. If you're seeing bounces climb, start with email deliverability and list hygiene.

Which Tool Should You Pick?

For outbound prospecting and email finding: Prospeo. The Meritt team switched and saw bounce rates drop from 35% to under 4% while tripling their pipeline from $100K to $300K per week. In Reddit discussions about B2B data tools, deliverability and invalid emails come up constantly - weekly-refreshed, verified data is how you solve that. If you're evaluating options, compare categories like email lookup tools and cold email lead databases.

For company intelligence: Crunchbase or PitchBook. Both have active user bases, regular data updates, and the review footprint to back up their claims.

Let's be honest about what's really going on here. If your average deal size is under five figures, you don't need company intelligence platforms at all. You need accurate contact data and a good sequence. Most teams weighing Mattermark vs Prospeo are really looking for a way to fill their pipeline - and that's a contact data problem, not a company research problem. If you're building a repeatable motion, use a documented contact sequence and keep your CRM clean with solid CRM data management.

FAQ

Is Mattermark still active in 2026?

The website is live and pricing is published, but its G2 profile has been inactive for over a year with zero reviews across every major platform. There's no recent press coverage, no community activity, and no evidence the dataset has grown since the 2018 FullContact acquisition. Proceed with caution.

Does Mattermark provide verified emails?

Mattermark lists "20M key contacts" but doesn't specify email verification rates or accuracy guarantees. For verified emails with 98% accuracy on a 7-day refresh cycle, Prospeo is purpose-built for that - contact data is its core product, not a secondary feature.

Can I try either tool for free?

Mattermark offers a 14-day free trial. Prospeo has a permanent free tier with 75 verified emails and 100 Chrome extension credits per month - no credit card required, no expiration date. For most teams testing the waters, the free plan gives you enough data to run a real campaign before committing a dollar.