Mattermark vs SalesQL: One Is Dead, the Other Has Risks
If you're comparing Mattermark and SalesQL, you're probably working off a listicle that hasn't been updated since 2019. Mattermark shut down in December 2017. SalesQL is alive but carries real risks around account blocking and inconsistent data accuracy.
Here's what actually matters in 2026.
30-Second Verdict
Mattermark is gone - FullContact acquired it for less than $1M and killed the product. SalesQL is a budget Chrome extension for contact enrichment that works for some recruiters, but you're gambling with account restrictions and spotty support. If you need consistently verified emails with high deliverability, skip both and use a tool built for verification from the ground up.
What Happened to Mattermark
Mattermark was a company intelligence platform covering growth signals, investor data, and funding rounds. It raised $17M+ starting in 2012, including a $7.3M Series B. Then FullContact bought the whole thing for less than $1M in cash and stock. Common stockholders got nothing.
You'll still find Mattermark pricing pages floating around showing $49-$500/user/month plans. Those are zombie artifacts. The product doesn't exist.
Here's the part most comparison pages miss: Mattermark and SalesQL were never direct competitors. Mattermark focused on company intelligence - growth signals, funding, investors. SalesQL focuses on finding contact details from professional profiles. Completely different tools solving completely different problems, which makes this "versus" framing a bit absurd to begin with.
SalesQL - What It Actually Does
SalesQL is a Chrome extension that finds emails and phone numbers on professional profiles, including 1st, 2nd, and 3rd+ degree connections. It supports bulk extraction from search result pages, pulls 40+ data points per contact, and exports to CSV. The company claims 200,000+ companies and 150,000+ professionals across 189 countries use the platform.
Recruiters in r/recruiting frame SalesQL as the cheap option for profile-based enrichment. For that narrow use case, it works. But "cheap" and "reliable" aren't the same thing.
Browser extensions that scrape profiles put your account at risk - and SalesQL's 3.3/5 support score means you're on your own when things break. Prospeo's server-side infrastructure finds and verifies emails across 300M+ profiles with 98% accuracy, no extension risk required. Data refreshes every 7 days, not every 6 weeks.
Stop gambling your accounts on budget extensions. Start with 75 free verified emails.
SalesQL Pricing in 2026
| Plan | Monthly | Credits/mo | Seats |
|---|---|---|---|
| Free | $0 | 100 | 1 |
| Basic | $39 | 2,000 | 1 |
| Professional | $79 | 5,000 | 3 |
| Organization | $119 | 12,000 | 15 |
Annual billing saves roughly 25%. One thing to watch: if you cancel a legacy plan, you can't go back to it. SalesQL updated its plan structure and the old tiers are gone. Trust SalesQL's pricing page over G2 or aggregator snapshots, which still show outdated credit amounts.
SalesQL Risks Worth Knowing
Use SalesQL if you're a solo recruiter who only needs profile-based enrichment and you're comfortable with browser extension risk. G2 rates it 4.5/5 across 166 reviews, with ease of use scoring well.
Skip SalesQL if you care about data accuracy, customer support, or account safety. Software Advice rates it 3.8/5 from 46 reviews - customer support scores 3.3/5 and value for money just 3.5/5. That's a rough combination.
A February 2025 reviewer warned bluntly: "Stay away from SalesQL" - citing account blocking, refund refusal, and rude support after paying for a six-month plan. Some users praise low bounce rates; others call the email validation "completely inaccurate." We've seen this pattern with other browser-extension-first tools: the experience varies wildly depending on your connection depth, your target geography, and frankly, your luck. You won't know which side you land on until you've burned credits.
What to Use Instead in 2026
Let's be honest: if your primary workflow is enriching professional profiles with verified emails, you don't need a browser extension at all. Extensions create account restriction risk for a problem that server-side infrastructure solves better and more safely. If you're evaluating options, start with a broader view of data enrichment services and how they handle verification.
Prospeo - Accuracy-First Alternative
Prospeo runs on proprietary email-finding infrastructure - 98% email accuracy, 300M+ profiles, and a 7-day data refresh cycle where the industry average sits around six weeks. Its 5-step verification process includes catch-all handling, spam-trap removal, and honeypot filtering, so your sender reputation stays intact. The free tier gives you 75 emails per month to test, paid plans work out to roughly $0.01 per lead, and there are no annual contracts. Fully self-serve.
We've seen teams switch from browser-extension tools and immediately cut their bounce rates from 30%+ down to under 5%. That gap isn't subtle - it's the difference between a healthy sending domain and one that's flagged. If you're troubleshooting this, use our email bounce rate benchmarks and fixes to diagnose what’s happening.
Apollo.io - Full GTM Platform
Apollo.io is the all-in-one alternative if you want prospecting, sequencing, and enrichment under one roof. It holds a 4.7/5 on G2 with 9,500+ reviews, offers a free tier, and paid plans start around $49/mo per user. The consensus on r/sales threads is that Apollo's breadth is hard to beat for the price, though its email accuracy doesn't match what we've seen from Prospeo's verification pipeline.
For verified contact data that won't tank your sender reputation, Prospeo is the sharper choice. For a full GTM platform with sequences and CRM built in, Apollo works. Either way, you're better off than gambling on a budget browser extension with a 3.3/5 support score. If you’re building a modern outbound stack, compare more options in our guide to the best outbound lead generation tools and the best sales prospecting databases.
SalesQL users report bounce rates that swing from great to terrible depending on geography and connection depth. Prospeo's 5-step verification - with catch-all handling, spam-trap removal, and honeypot filtering - delivers under 5% bounce rates consistently. At $0.01 per email, it costs less than a single wasted send from bad data.
Cut your bounce rate from 30%+ to under 5%. Test it free today.
FAQ
Is Mattermark still available?
No. Mattermark shut down in December 2017 after FullContact acquired it for less than $1M. Any pricing pages or product listings you find online are outdated artifacts - the platform no longer exists.
Is SalesQL free?
SalesQL offers a free plan with 100 credits per month on a single seat. Paid plans start at $39/month for 2,000 credits. Canceling a legacy plan means you lose access to that tier permanently.
What's a good free alternative to both tools?
Prospeo offers 75 free emails per month with 98% accuracy from 300M+ profiles - no contracts or credit card required. Apollo.io also has a free tier with broader prospecting features. Both outperform SalesQL's 100 free credits on data quality and deliverability.