Altss vs Tomba: Different Tools for Different Jobs
You're comparing an LP intelligence platform to a B2B email finder. That's like asking whether a Bloomberg terminal or a cold email tool is better - they solve completely different problems. In our experience, people landing on this comparison are usually sales teams who heard about Altss and assumed it was an email finder. It's not. Let's sort this out fast.
30-Second Verdict
Altss is a family office and institutional investor database built for fund managers running LP outreach. It costs $10,000-$15,500/year and uses a privacy-first, UI-only architecture with no bulk exports and no API data extraction. If you're raising a fund, it's purpose-built for that.
Tomba is a B2B email finder for sales teams. It indexes 450M+ emails across 76M domains, starts with a free tier, and tops out around $4,041/year. If you're running cold outbound, it's in the right category - though not necessarily the best in it.
What Is Altss?
Altss is a private-markets intelligence platform, not an email finder. It covers 9,000+ family offices, 30,000+ institutional investors, and 1.5 million verified LP-side contacts. Family offices manage $3.1T+ in assets - projected to exceed $5T by 2030 - which explains why dedicated LP intelligence tools exist. Altss expanded beyond family offices to cover institutional LPs in February 2026.
Every email address in the platform is live-verified before it reaches your screen, and the database refreshes on a 30-day cycle. Altss maintains 99.7%+ deliverability through monthly bounce-testing. The platform is deliberately locked down: UI-only access, no bulk exports, and no API data extraction. That's a privacy-first design choice, not a missing feature.
Their own research found fund managers spend 40-60% of LP outreach time on conversations that will never convert due to mandate mismatch. That stat alone justifies why a purpose-built LP database exists. Early reviews on G2 praise data freshness and the ability to catch team moves quickly, though some users note the interface can slow down on large filter sets.
What Is Tomba?
Tomba is a straightforward B2B email finder and verifier. It indexes 450M+ emails from 76M domains, offers a Chrome extension, API access, and a Google Sheets add-on. For sales teams running cold email campaigns, it covers the basics: domain search, individual email lookup, bulk verification, and data enrichment.
On G2, Tomba holds a 4.7/5 rating across 25 reviews, with users praising data accuracy and ease of use. The recurring complaint? Plan limits feel tight. On Trustpilot, the picture is more mixed at 3.8/5 across 23 reviews.
One thing worth flagging: Tomba's email verifier skips personal email providers like Gmail and Outlook, so those addresses won't be verified there.
If you're comparing email finders, accuracy is the only metric that matters. Tomba's plan limits will slow you down; Altss isn't even in the category. Prospeo delivers 98% email accuracy on a 7-day refresh cycle at ~$0.01/email - with 30+ filters, intent data, and native sequencer integrations.
Stop comparing the wrong tools. Start with the right data.
Feature Comparison
These tools don't compete. They serve different buyers solving different problems. But if you landed here wondering which one to buy, this table makes the distinction clear.
| Dimension | Altss | Tomba |
|---|---|---|
| Category | LP/investor intelligence | B2B email finder |
| Database size | 1.5M LP contacts | 450M+ emails |
| Contact types | Institutional investors, family offices | Business professionals |
| Pricing | $10,000-$15,500/yr | Free-$4,041/yr |
| Data refresh | 30 days | Not disclosed |
| Export/API | No bulk exports; UI-only | Yes (API, Sheets) |
| Chrome extension | No | Yes |
| Integrations | Closed architecture | API, Google Sheets, various |
| Verification | Live inbox verification | Email verification included |
| Best for | Fundraising, LP outreach | Lead gen, cold email |
If you're a fund manager, Altss is the only one worth evaluating here. If you're a sales team, Altss isn't even in your category. The real question for sales teams is whether Tomba is the best email finder - and that's where it gets interesting.
Who Should Use Which
Use Altss if you're raising capital and need verified LP contacts with mandate data, allocation behavior, and relationship mapping. Roughly 8% of investment team members change positions every four months, so the 30-day refresh cycle isn't a nice-to-have - it's essential for fundraising teams who can't afford bounced emails to family office principals. At $10,000-$15,500/year with no seat limits, it's priced for fund managers, not sales reps.
Use an email finder if you're running outbound sales, building prospect lists, or enriching CRM data. Altss won't help you here - no bulk exports, no API extraction, and no integration with your sequencer. You need a tool built for that workflow entirely. So the next question is which email finder actually deserves your budget.
A Stronger Email Finder Option
Real results back this up: Meritt cut bounce rates from 35% to under 4% after switching, and their pipeline tripled from $100K to $300K per week.
Prospeo also ships with 125M+ verified mobile numbers at a 30% pickup rate, 30+ search filters including buyer intent and technographics, and native integrations with Salesforce, HubSpot, Smartlead, Instantly, and Clay. For outbound teams who need more than basic domain lookups, it's a different tier entirely. Skip Tomba if your team is doing any serious volume - the plan limits will frustrate you within a week. If you're tightening deliverability, start with email bounce rate benchmarks and an email deliverability guide before scaling volume.
Meritt switched to Prospeo and cut bounce rates from 35% to under 4% - tripling pipeline to $300K/week. With 300M+ profiles, 125M+ verified mobiles, and integrations with Salesforce, HubSpot, and Clay, Prospeo replaces Tomba's basic lookups with a full outbound data stack.
75 free emails/month. 98% accuracy. No contract required.
FAQ
Can Altss replace an email finder?
No. Altss is an LP intelligence platform with no bulk export functionality and no API data extraction. It's built exclusively for fund managers targeting institutional investors and family offices. For B2B sales outreach, you need a dedicated email finder.
Is Tomba free to use?
Tomba offers a free tier with 25 searches and 50 verifications per month. Paid plans start at $441/year. Prospeo's free tier offers 75 emails per month at 98% accuracy - three times the starting volume with higher verified-email rates.
What's the best email finder for B2B sales in 2026?
Accuracy should be your top filter. A recurring pain point in cold email communities on Reddit is "verified" emails that still bounce 20%+. We've seen it ourselves with multiple tools. Prospeo leads on accuracy (98%), data freshness (7-day refresh), and pricing (~$0.01/email). Tomba is a solid budget option but has tighter plan limits and a lower Trustpilot score.