Scrubby vs Tomba: Different Tools for Different Jobs
Scrubby validates catch-all emails your SMTP verifier couldn't classify. Tomba finds B2B emails from a 450M+ database. Comparing these two is a bit misleading - they aren't competitors and they solve different problems entirely. This breakdown covers when each tool earns its spot in your stack, where each one falls short, and what to do if you need both capabilities without running two subscriptions.
30-Second Verdict
These aren't direct competitors. Scrubby is a catch-all validator. Tomba is an email finder and database. Which one you pick depends on which problem you're actually solving.
Pick Scrubby if you already have an email finder and an SMTP verifier, but need a specialist layer to validate "risky" catch-all and risky addresses before you hit send. Pick Tomba if you need to discover B2B emails from scratch - it's a 450M+ email database with built-in verification. Pick Prospeo if you want finding, verification, and catch-all handling in one platform, plus mobile numbers. No stitching required.
The Core Difference
These tools occupy different stages of the outbound pipeline. Scrubby doesn't find emails - it validates the ones your SMTP verifier flagged as uncertain. It uses burner accounts and blank test emails to infer whether catch-all and risky addresses are actually deliverable. That process takes 24-72 hours, which is the trade-off for going deeper than standard SMTP checks.
Tomba is an email finder built on a 450M+ database spanning 76M domains. You search a domain, get a list of email addresses, and Tomba returns them with verification signals in under a second. Fast and convenient, but it's not the same kind of catch-all/risky analysis Scrubby specializes in.
Here's the thing: most teams don't need both. If your deals average under $10K and you're sending fewer than 50K emails per month, a single platform that handles finding and verification (catch-alls included) will outperform a stitched-together stack every time. The complexity tax of managing multiple tools eats more pipeline than slightly better catch-all detection saves.
Side-by-Side Feature Comparison
| Feature | Scrubby | Tomba | Winner |
|---|---|---|---|
| Primary function | Catch-all validation | Email finder + verifier | Depends on your problem |
| Database | N/A (validation only) | 450M+ emails, 76M domains | Tomba |
| Verification speed | 24-72 hours | Under 1 second | Tomba |
| Accuracy claim | 98% | 99.5% verification accuracy | Tomba (on standard emails) |
| G2 rating | 4.8/5 (45 reviews) | 4.7/5 (25 reviews) | Scrubby (marginally) |
| Free tier | 100 credits (one-time) | 25 searches + 50 verifications/mo | Tomba (recurring) |
| Entry paid plan | $27/mo (1K validations) | $39/mo (500 searches + 1,000 verifications) | Scrubby (cheaper per unit) |
| Mid-tier | $127/mo (5K validations) | $89/mo (2,500 searches + 5,000 verifications) | Tomba (more capacity per dollar) |
| Catch-all handling | Core feature | Standard verification; skips personal/disposable emails | Scrubby |
| Integrations | API access + integrations | HubSpot, Pipedrive, Airtable, Zapier, Make, n8n | Tomba (broader ecosystem) |
A note on Tomba's pricing: the table uses G2-listed monthly rates. Tomba's official site offers annual billing that drops costs - the Starter/Basic plan runs $441/year, roughly $36.75/month. If you're committing for a year, that's a meaningful discount worth factoring in.
Running Scrubby for catch-all validation and Tomba for email finding means two bills, two dashboards, and a 24-72 hour gap in your workflow. Prospeo's 5-step verification handles catch-alls, spam traps, and honeypots natively - no second tool required. 143M+ verified emails at 98% accuracy, refreshed every 7 days.
One platform. Finding, verification, and catch-all handling at $0.01/email.
Scrubby: Strengths and Limitations
Why agencies love it. Scrubby's 4.8/5 (45 reviews) on G2 across 45 reviews reflects genuine satisfaction from a narrow, well-defined use case. This is the tool agencies sending 1-1.5M emails per month slot into their verification waterfall alongside MillionVerifier and ZeroBounce. It's designed to run after your SMTP verifier, not instead of it. The specialist layer that catches what bulk tools miss.
The operational trade-offs. That 24-72 hour turnaround is real and non-negotiable. If you're running time-sensitive sequences triggered by job changes or funding announcements, that wait will bottleneck your workflow. There's also a Reddit thread where a user reported Scrubby marking 700 out of 1,700 emails as invalid, with manual spot checks suggesting some were false negatives. One data point, not a pattern - but the operational takeaway is sound: treat Scrubby as one layer in your stack, sample-test a batch of "invalid" catch-alls before suppressing them entirely, and measure bounce rate deltas over a few sends to calibrate trust.
Tomba: Best For and Watch-Outs
Best for teams that need to build prospect lists from scratch. The 450M+ email database with domain search, bulk lookup (up to 10,000 emails per operation), and a browser extension makes Tomba a capable prospecting tool. G2 reviewers consistently praise data accuracy and the clean interface. The integration ecosystem - HubSpot, Pipedrive, Airtable, Zapier, Make, n8n - gives it more workflow flexibility than Scrubby publicly lists.
Watch-outs. A common G2 complaint is low plan limits. Even the Enterprise tier at $389/month caps you at 25,000 searches and 60,000 verifications. Trustpilot tells a rougher story at 3.8/5 across 23 reviews, with complaints about outdated information and emails that don't resolve. Multiple sources flag that Tomba can't find Gmail addresses even when they're publicly listed on a website. And the free tier - 25 searches and 50 verifications per month - is too restrictive to properly evaluate the tool before committing.
How Tomba counts usage (so you don't get surprised):
- Domain Search costs 1 search credit per 10 emails returned
- Email Finder costs 1 credit per email found
- Duplicates count once per billing period - re-searching the same domain won't double-charge you
- Personal emails (Gmail/Outlook) and disposable emails are skipped by the verification module with no credit counted
- Verification credits are metered separately from search credits
Understanding these rules matters. A single Domain Search returning 50 emails burns 5 search credits, not 1. At the Starter tier's 500-search limit, that's 100 domain lookups before you're out - which can disappear fast during a prospecting sprint.
One Platform Instead of Two
If you need both finding and catch-all validation, running Scrubby plus Tomba means two subscriptions, two dashboards, and a 24-72 hour gap between discovery and deliverability confidence.
We've seen this play out with our own users who switched from multi-tool stacks. Prospeo combines 300M+ professional profiles and 143M+ verified emails with a 5-step verification process that includes catch-all handling, spam traps, and honeypots filtering - plus 125M+ verified mobile numbers with a 30% pickup rate. Data refreshes every 7 days instead of the industry-average 6 weeks. Self-serve signup, no contracts, and a free tier of 75 emails plus 100 Chrome extension credits per month so you can actually test it before paying anything.
If you're evaluating alternatives, start with a broader view of sales prospecting databases and how they handle data enrichment and verification in one workflow.
Tomba caps you at 25K searches on its top tier. Scrubby makes you wait 72 hours. Prospeo gives you 300M+ profiles with instant verification, 125M+ mobile numbers with 30% pickup rates, and catch-all handling built into every lookup - no waterfall stack needed.
Ditch the multi-tool tax and start prospecting in one click.
Final Verdict
The real question isn't which tool is "better." It's whether you need a specialist or a platform.
Pick Scrubby if you already have an email finder and SMTP verifier but need a dedicated catch-all validation layer. It does one thing well. Budget $27-$127/month depending on volume.
Pick Tomba if you need to discover B2B emails from scratch and want a database with verification built in. Just understand the metering rules and plan limits before you commit. Skip it if you're prospecting heavily into Gmail-based contacts - that's a known blind spot.
Pick Prospeo if you want finding, verification (including catch-all), mobile numbers, and enrichment without managing multiple subscriptions. One tool, one bill, no 72-hour wait.
Let's be honest - for most outbound teams, the stitched-together approach sounds smart in theory but creates friction in practice. Pick the setup that matches your actual workflow, not the one that looks best on a spreadsheet.
FAQ
Are Scrubby and Tomba direct competitors?
No. Scrubby validates catch-all and risky emails after an SMTP verifier flags them as uncertain. Tomba finds emails from a 450M+ database and runs standard verification. They solve different problems and sit at different stages of the outbound pipeline.
Can I use Scrubby and Tomba together?
Yes - use Tomba to find emails, then run catch-all results through Scrubby for deeper validation. That means two subscriptions and a 24-72 hour wait for Scrubby's results. Prospeo handles both steps in one platform with its 5-step verification process, eliminating the wait and the extra bill.
Which tool handles high-volume cold email better?
Scrubby is the go-to for agencies sending 1-1.5 million emails/month as a catch-all layer alongside bulk verifiers like MillionVerifier. Tomba's plan limits - even at $389/month for 25,000 searches and 60,000 verifications - feel restrictive at that scale. Map your monthly send volume against each tool's credit costs before committing.
How does catch-all handling differ between them?
Scrubby sends blank test emails from burner accounts to infer deliverability - a process that takes 24-72 hours but goes deeper than standard checks. Tomba returns verification results in under a second but doesn't perform the same catch-all/risky analysis, and it skips personal and disposable email addresses entirely during verification.
