GrowMeOrganic vs Mattermark: One Is Dead, the Other Has Problems
Here's the short version: Mattermark sold for less than $1M in a liquidation deal back in 2017. It's not a product you can buy. GrowMeOrganic is alive, but reviewers on G2 report email accuracy so low that one user measured it under 12%. Neither is the answer you're looking for.
30-Second Verdict
Mattermark shut down after selling to FullContact in late 2017. You can't sign up. It's gone.
GrowMeOrganic runs $39-$199/mo and handles list building plus cold email outreach. But email accuracy is a documented problem - reviewers call it a "waste of money," and Reddit users report 80% of emails missing the mark.
What Happened to Mattermark?
Mattermark raised $20.2M in venture funding to build a startup intelligence database covering company growth signals, funding data, and SEC filings. By late 2017, it was over. TechCrunch reported the company was liquidating and selling to FullContact for under $500K in cash plus some stock. Tracxn lists the acquisition date as January 18, 2018, and by December of that year, just seven employees remained.
Hacker News users who tried the product near the end found the database "terribly outdated" with broken contact info. Today, Mattermark's G2 profile sits at zero reviews and is flagged inactive. If you're after company intelligence - funding rounds, growth signals, startup tracking - Crunchbase and PitchBook are the direct successors that community lists on AlternativeTo consistently point to.
Mattermark is gone and GrowMeOrganic users are bolting on paid verification tools just to make their data sendable. Prospeo's 5-step verification delivers 98% email accuracy out of the box - no NeverBounce tax required. 143M+ verified emails, refreshed every 7 days.
Stop paying twice for data that should work the first time.
GrowMeOrganic: What You Actually Get
We've spent time digging through user reviews on this one, and the pattern is clear. Capterra gives GrowMeOrganic 4.2/5 with solid marks for email extraction (4.4) and ease of use (4.4). The tool bundles list building with cold email sending, and pricing ranges from $39/mo for a single user up to $199/mo for unlimited seats depending on which pricing table you're looking at.
Sounds reasonable on paper. The problem shows up the moment you actually send.
Skip this if you're running cold email at any real volume. The accuracy complaints aren't isolated - one G2 reviewer measured under 12% accurate emails, and a user on r/sales tested it against manually found addresses and reported 80% misses. We've watched this pattern play out repeatedly: one Reddit user's cold email stack ran Sales Nav to GrowMeOrganic to NeverBounce to PlusVibe - bolting on a paid verification tool just to make the data usable. That tells you everything about the underlying data quality.
Feature Comparison
| GrowMeOrganic | Mattermark (Legacy) | Prospeo | |
|---|---|---|---|
| Status | Active | Shut down (2017) | Active |
| Category | Prospecting + cold email | Startup intelligence | B2B data platform |
| Pricing | $39-$199/mo | $49/user/mo-$999/mo (legacy tiers) | Free tier; paid from ~$39/mo |
| G2 Rating | 4.0/5 (12 reviews) | Inactive (0 reviews) | - |
| Email Accuracy | ~12-20% per user reports | N/A | 98% verified |
| Verification | Not built in | N/A | 5-step, built in |
| Free Tier | 14-day trial | None | 75 emails/mo |
What to Use Instead
Prospeo
The entire reason GrowMeOrganic users bolt on NeverBounce is that the emails coming out aren't verified. Prospeo eliminates that step entirely - every email runs through a 5-step verification process with catch-all handling, spam-trap removal, and honeypot filtering before it reaches your export. No extra tool. No extra cost.
The database covers 143M+ verified emails across 300M+ professional profiles, refreshed on a 7-day cycle instead of the 6-week industry average. Real results back this up: Meritt dropped their bounce rate from 35% to under 4% after switching, and their pipeline tripled. At roughly $0.01 per email with no annual contracts, you're paying a fraction of what GrowMeOrganic plus a separate verification tool would cost - and the data actually works. Add 30+ search filters, intent data tracking 15,000 topics, and native CRM integrations with Salesforce, HubSpot, Smartlead, and Instantly, and you've got a complete prospecting workflow without the duct tape.
Meritt switched to Prospeo and their bounce rate dropped from 35% to under 4% - pipeline tripled from $100K to $300K/week. At $0.01 per email with no contracts, you'll spend less than GrowMeOrganic plus a verification tool combined, and actually reach real inboxes.
Replace your broken prospecting stack with verified data that converts.
Crunchbase
If you specifically miss Mattermark's company intelligence - funding rounds, growth signals, startup tracking - Crunchbase is the direct successor. Free tier available, paid plans start around $29/mo. It's not an email finder, though. Pair it with a prospecting tool for contact data.
Apollo
Apollo's free tier is generous and the database is massive. Paid plans start around $49/mo. But email accuracy runs closer to 79%, which means you're back in verification-tool territory. Good for volume prospecting if you budget for data cleanup.
Let's be honest: if your entire cold email workflow requires a separate paid tool just to verify the data you already paid for, you don't have a prospecting stack. You have a tax on bad data. Most teams save money and hours by starting with verified data in the first place.
FAQ
Is Mattermark still available in 2026?
No. Mattermark was sold to FullContact in late 2017 for less than $1M. FullContact pivoted into identity resolution and data enrichment. The product is gone - there's nothing to sign up for.
Is GrowMeOrganic accurate enough for cold email?
Not without a separate verification step. Reviewers consistently cite 12-80% of emails being inaccurate or missing entirely. If you use it, budget for a tool like NeverBounce on top, which adds cost and friction to every campaign.
What's the best Mattermark replacement for contact data?
For company intelligence like funding and growth signals, Crunchbase is the closest match. For verified contact data, Prospeo covers 300M+ profiles with 98% email accuracy and a 7-day refresh cycle - no separate verification tool required. The free tier gives you 75 emails/month to test before committing.