Prospeo vs Apollo vs LeadMagic - a real comparison after 3 months in production

Context: how database tools work

If you send cold email at any real volume, you've hit the same wall we have: no single provider finds every email. Coverage varies by geography, industry, and company size. Data goes stale. And roughly 40% of B2B domains are catch-all, which means a standard SMTP check tells you nothing about whether an address is real.

That's why we built a multi-provider waterfall - a pipeline that tries multiple tools in sequence until it finds a verified email. The question was always: which provider goes first?

You might think the answer is "the cheapest" or "the fastest." But we ended up choosing Prospeo for a different reason: it's the only tool that covers three stages of our pipeline in a single integration - company search, contact search, and email verification.

Prospeo already had the best quality, but we weren't using it

Back in 2025 we ran a side-by-side test with Prospeo. We were impressed with the quality - on a 2,500-email campaign we had zero bounces. If you do cold email you know how rare that is - with Apollo, around 40% bounce. Obviously it's not always zero - our average with Prospeo has been around 1%.

But we didn't switch at the time because on price and speed, LeadMagic was better for what we needed then.

The switch - why now

In early 2026, Prospeo reached out to us. They'd launched Prospeo V2 - two years in the making. It's no longer just an email finder and verifier - they now have 280M+ contacts, their own database.

Pricing is now similar to LeadMagic, but Prospeo covers much more. LeadMagic doesn't have a contact database. Now it's an easy decision.

How Prospeo fits into our campaign workflow

Every new client starts the same way: map the Total Addressable Market, find decision-makers, get verified emails, personalize, and send. Here's our pipeline with Prospeo touchpoints highlighted:

Every step is automated with Claude Code + MCP servers. Zero manual data entry.

Five out of six stages go through Prospeo. That consolidation matters when you're processing thousands of contacts per client - fewer integrations, fewer points of failure, one set of API credentials.

TAM building: why Prospeo goes first, Apollo second

When Prospeo launched V2, it went from being just an email finder to a full B2B database - a direct rival to Apollo for prospecting. Two APIs made the difference:

Here's how the two databases compare:

		Apollo
Total contacts	280M+	230M+
Companies	30M+	30M+
Verified emails	143M	Not disclosed
Data refresh	Weekly (7 days)	Not disclosed
Email verification	Triple verification (SMTP + delivery data + BounceBan)	Verified
Mobile numbers	~30% hit rate, 80% from real email signatures and CRMs, 10 credits/number	~55% accuracy, 2M+ contributors, 8 credits/number
Credits for misses	0 (free)	Not disclosed
Permanent dedup	Yes (re-enrich = free forever)	Not disclosed
Accuracy benchmark	#1 in Clay's test (80.81%)	Not ranked #1
Built-in sequencer	No (data-only focus)	Yes
Users	40K+	600K+

Data from Prospeo and Apollo's respective websites as of April 2026. "Not disclosed" means the information isn't published - not that the feature doesn't exist.

We still use Apollo for coverage - the goal is maximum TAM reach, so we use both and deduplicate by LinkedIn URL. But Prospeo goes first because the data is fresher (7-day refresh vs weeks/months) and the API is cleaner to work with programmatically.

Email waterfall: head-to-head with LeadMagic

We tested ~5,000 contacts across multiple Spanish industries - the same contacts sent to both tools to keep the comparison fair. Here's what we found:

Prospeo came out ahead in every market we tested - marginally in Spain, dramatically in the UK. Here's the full comparison for email finding:

		LeadMagic
Approach	Database-first (280M+ contacts, search and enrich)	Verification-first (real-time lookup, no browsable database)
Email accuracy	98% claimed	97% claimed (99.5% in their own benchmark)
Verification method	SMTP + delivery data + BounceBan	Syntax, DNS, SMTP, mailbox, risk scoring
Our comparison (Spain)	~5% more emails found	Comparison baseline
Our comparison (UK)	69% find rate (2.76x)	25% find rate
Credits for misses	0 (free)	0 (pay per valid result)
Credit rollover	No (reset each cycle)	Yes (unlimited rollover)
Mobile numbers	10 credits/number	5 credits/number
Pricing	From $49/mo (2,000 credits, per user)	From $59.99/mo (2,500 credits, unlimited users)
Scope	Full database + email finding + enrichment	Email finding + enrichment API (12 endpoints)

Data from Prospeo and LeadMagic's respective websites and our own tests. Results from ~5,000 contacts across Spanish industries.

The emails Prospeo finds are clean: our first campaign using Prospeo emails had a 0% hard bounce rate. Honestly, I couldn't believe it. Since then it's been around 0.7% across all campaigns - well below the 2% threshold where problems start.

The economics help too. Prospeo charges 0 credits for misses (you only pay when it actually finds an email) and has permanent deduplication - re-enriching the same contact costs nothing. When you're processing thousands of lookups per client, that adds up. LeadMagic also charges 0 for misses, which is great - but it doesn't have the prospecting database or the permanent dedup that Prospeo offers.

Triple verification: why their bounce rates are so low

Most email finders do an SMTP check - "does this mailbox exist?" - and call it verified. Prospeo goes three levels deeper:

The result is ~98% deliverability on verified emails. That's not a marketing claim - it matches what we've seen in our own campaigns. When your email finder says "valid," you need to trust it, because a 3%+ bounce rate wrecks your domain reputation. With Prospeo, we trust it.

Why API access is a dealbreaker

This is the part that might not matter to everyone, but for us it's become essential.

Our entire pipeline runs on Claude Code and MCP servers (Model Context Protocol). Every tool in our stack - Prospeo, Apollo, Supabase, Smartlead - is accessed programmatically. No clicking through interfaces, no exporting CSVs, no manual data entry. The pipeline looks like this:

Good API access is now table stakes for any tool in our stack. Prospeo, Apollo, and LeadMagic all have solid APIs - that's why they're the tools we use. If you don't have a proper API, you don't get into our workflow.

A startup called me this week with an interesting contact search product. Novel methods, smart approach. But no API access. I told them to come back when they had one - it would be too slow and wouldn't fit into our flows.

This is also why we've moved away from Clay for most workflows. Clay was central to how we operated, but their API access has weakened over time, and for an agency that automates everything, that's a dealbreaker.

Clay has an excellent database - arguably the best in the industry for prospecting. The problem isn't the data, it's getting it out programmatically:

API search	Clay
Database	100-150+ providers aggregated (incl. Apollo, ZoomInfo, Clearbit)	280M+ contacts, 30M+ companies
Search companies	No public API	Yes - full filters via REST API
Search contacts	No public API	Yes - 200M+ contacts, 30+ filters via API
Firmographics	Via external providers (extra credits)	Yes - 50+ fields, tech stack, funding
Bulk export	25 records/webhook, 10/sec limit	50 records/request

Clay API info per Clay University.

Prospeo's REST API is clean and well-documented, which made it easy for us to build our own MCP server on top of it. Key specs for automation:

Conclusion

We made Prospeo our primary tool in late January 2026. Since then it's been the first stop in our TAM building, the first provider in our email waterfall, and the backbone of our Claude Code automation.

If you're putting together a prospecting stack from scratch, the tool is only one piece. Read our complete cold email guide for the full playbook, see our list-building guide for how we use Prospeo to build clean TAMs, and browse the full sales tools directory to compare the other options in the category.

It's not just an email finder. It's company search, contact search, and verified emails - all through a single API. For agencies doing cold email at scale, especially if you're building automations with AI tools like Claude Code, the combination of data quality, economics (0 credits for misses), and API access makes it a clear choice.