Bytemine vs Mattermark: Different Tools for Different Jobs
Comparing Bytemine and Mattermark is like comparing a phone book to a stock screener. One gives you contact data for outbound prospecting. The other gives you company intelligence for tracking growth signals, investors, and funding rounds. G2 doesn't even classify Mattermark as a contact database - it sits under Lead Scoring Software, and G2 names 6sense Sales Intelligence as the top Mattermark alternative. These tools solve fundamentally different problems, and picking the wrong one wastes both money and time.
30-Second Verdict
Mattermark is for VCs, analysts, and deal-sourcing teams who need company-level intelligence - growth signals, funding data, employee trends across 4M companies, plus a layer of key contacts. It's not a direct-dial-first contact database.
Bytemine is for outbound sales teams who need emails and phone numbers. It covers 80M US mobiles and 70M+ work emails at $0.05/contact.
Quick Feature Comparison
| Mattermark | Bytemine | Prospeo | |
|---|---|---|---|
| Data type | Company intelligence (+ key contacts) | Contact data | Contact data |
| Database | 4M companies | 80M mobiles, 70M+ emails | 300M+ profiles |
| Starting price | $49/user/mo (browser access; CSV export on Professional) | $50/mo + $0.05/contact | Free; ~$0.01/email |
| Enrichment | Company-level | Contact-level | Contact-level |
| API | REST + GraphQL | Yes | Yes |
| Free tier | 14-day trial | Limited free plan | 75 emails/mo |
| Best for | VCs, analysts | US outbound teams | Verified emails + dials |
What Is Mattermark?
Mattermark has one of the stranger backstories in B2B data. The company raised $17M+, then sold to FullContact in 2017 for less than $1M in cash and stock - a fire sale by any measure. It has since re-launched as an independent company focused on company intelligence with a contacts layer on top.
The database covers 4M companies with 80+ data fields per record: geography, industry, revenue, funding history, employee growth, estimated web traffic. Mattermark pulls from millions of news articles and websites daily and runs in-house analyst verification. The API supports both REST and GraphQL, which is genuinely useful for dev teams building custom deal-sourcing workflows. There's also a free iOS app that requires no account and a Chrome extension for quick lookups.
Let's be clear about what this means in practice. Company intelligence tools like Mattermark serve a completely different workflow than contact databases. If you're a VC firm or corporate development team tracking growth trajectories and funding events, Mattermark fits. If you're an SDR who needs verified emails and direct dials for cold outreach, it's the wrong tool entirely.
Mattermark gives you company signals. Bytemine gives you contacts. Prospeo gives you both - 300M+ profiles with 98% email accuracy, plus buyer intent, technographics, funding data, and headcount growth filters built in. No need to stitch two tools together.
Get company intelligence and verified contact data in one platform.
What Is Bytemine?
Bytemine is a contact data provider with strong US coverage. The numbers: 80M US mobile numbers, 70M+ work emails, and 100M+ personal emails. Pricing starts at $50/month for 1,000 credits, with contacts running $0.05 each. No annual commitment, unlimited users per account.
Datarade lists Bytemine at 95% accuracy, and the single review on the platform praises the API, data quality, and responsive support. That said, one verified review is all that's publicly available, which makes it hard to gauge reliability at scale. We didn't find meaningful Reddit discussion for either tool in our research - worth weighing if peer validation matters to your buying process.
Here's our take: if your total addressable market is US-only and your average deal size is under $15k, Bytemine's pay-per-contact model probably makes more sense than locking into a platform with seats and annual contracts. But the thin review footprint is a real risk. You're essentially trusting a single Datarade review and whatever you can validate during a trial.
Pricing Breakdown
| Tool | Tier | Price |
|---|---|---|
| Mattermark Standard | Browser access only | $49/user/mo |
| Mattermark Professional | + CSV export | $500/user/mo (annual) |
| Mattermark Enterprise | + team features | Custom |
| Mattermark API | 1,000-20,000 requests/month | $99, $259, $499, $999 (annual) |
| Mattermark SF Enrichment | Per seat | $49/seat/mo (annual) |
| Bytemine | 1,000 credits | $50/mo + $0.05/contact |
Here's the thing about Mattermark's pricing: you pay $49/month to browse data, but you can't export to CSV on the Standard plan. Want a CSV export? That jumps to $500/user/month on an annual contract - a 10x increase for what amounts to a download button. For a tool that sold for under $1M in 2017, that's an aggressive pricing structure that frustrated us when we dug into it. Bytemine's model is simpler: pay per contact, no annual lock-in, accessible for small teams.
Which One Should You Pick?
For company intelligence workflows - VC deal sourcing, portfolio tracking, company-level CRM enrichment - Mattermark is the better fit. The API is strong for building custom pipelines, and the data depth on company trajectories is hard to match in a dedicated contact tool.
For US-focused outbound prospecting without annual contracts, Bytemine works. The credit-based pricing scales with usage, and the self-serve platform includes API access out of the box.
But if we're being honest, most people searching for this comparison actually need contact data, not company intelligence. And for contact data, both tools have limitations that are hard to ignore - Bytemine's thin validation track record and Mattermark's contact layer being secondary to its company data.
A Stronger Option for Contact Data
Beyond raw data, Prospeo includes 30+ search filters - buyer intent powered by Bombora, technographics, job changes, headcount growth, and funding signals - so you can layer company intelligence on top of contact data without needing a separate tool like Mattermark. Native integrations with Salesforce, HubSpot, Instantly, Lemlist, and Clay mean the data flows straight into your existing stack. We've seen teams like Snyk cut bounce rates from 35-40% down to under 5% after switching, which is the kind of deliverability difference that actually moves pipeline numbers.
Bytemine charges $0.05/contact with a thin review footprint. Prospeo delivers verified emails at $0.01 each - 5x cheaper - backed by 15,000+ companies and a 5-step verification process that keeps bounce rates under 5%. Snyk proved it with 50 AEs and 200+ new opportunities per month.
Stop paying 5x more for data you can't fully trust.
FAQ
Is Mattermark still active in 2026?
Yes. Mattermark shut down and sold to FullContact in 2017 for less than $1M after raising $17M+. It has since re-launched independently, offering company intelligence on 4M+ companies with 80+ data fields per record.
Can you use Bytemine and Mattermark together?
They serve different layers. Use Mattermark to identify target companies through growth signals and funding data, then use a contact tool like Bytemine or Prospeo to find verified emails and direct dials for the people at those companies.
What's the best tool for verified B2B emails?
Prospeo leads on verified email data with 143M+ verified emails at 98% accuracy, a 7-day refresh cycle, and a free tier of 75 emails per month. Bytemine claims 95% accuracy per Datarade but lacks comparable independent validation at scale.