Learn / Lead lists
Apollo vs Prospeo: which database actually delivers
Picking the wrong lead database can quietly wreck a cold email operation. After sending over 1.5 million cold emails a month and booking thousands of sales calls off the lists they produce, I can tell you the database is everything: outdated data lands you in spam, and wrong contacts burn money on people who were never going to answer. Most people don't realize their tool is failing them until both have already happened.
So here's the Apollo vs Prospeo comparison in full: data accuracy, integrations, list control, usability, and the per-credit math, with a verdict at the end.
What changed in 2025
Apollo was the default database for years, and with good reason: massive coverage, everyone knew the interface, every scraper supported it. Then around March 2025, LinkedIn banned Apollo's scrapers along with a batch of others, and the data has been drifting toward questionable ever since. Prospeo used to be just the email enrichment tool you called from Clay; it launched a full interface that competes with Apollo head-on, wasn't among the banned scrapers, and has been taking ground, especially with agencies. That's the matchup.
Data accuracy and coverage
Coverage first: Apollo shows 234 million contacts with zero filters set. A like-for-like search (US founders, financial services, verified emails) returned roughly 13,000 contacts on both platforms, so on real segments the coverage gap mostly disappears.
Freshness is where they split. Prospeo refreshes its data every 7 days against an industry norm of 30 to 90, runs SMTP-style checks with spam-trap and honeypot detection, and passes every lead through Bounceban before you export it. Apollo's own verification has never been reliable enough for us to trust: in 3 years of using it, every list has gone through MillionVerifier before a campaign, no exceptions. And for cold calling, the phone data tells the same story: Apollo's numbers disappointed, Prospeo's we swear by.
Integrations: CSV shuffle vs API-first
Apollo connects natively to the big CRMs (Salesforce, HubSpot, Pipedrive, Zoho, Outreach), but in practice most operators export CSVs and shuffle them between verifier, enrichment, and sequencer by hand, because the API is slow and throttled enough that we gave up on it. Its native sequencer we do not recommend.
Prospeo is API-first and built like it expects you to run an agency workflow: Outreach, Salesloft, Lemlist, Smartlead, Instantly, HubSpot, Salesforce, push-to-CRM straight from a list, Clay via waterfall today with a native Clay integration on the way. The difference is one continuous pipeline versus a nightly import-export ritual.
List control, the part nobody compares
Past a few thousand emails a month, your biggest risk stops being bad copy and becomes operational: re-contacting the same people and paying twice for the same data. Apollo can do exclusions if you maintain lists and remember to exclude them on every pull. Fine, but manual.
Prospeo does two things better: client block lists drop straight in, and a hide-everyone-previously-exported toggle means you only ever pay for new contacts. That second one changes the economics, because Prospeo can become the core database you own: every list you pull compounds into an asset instead of a rental you re-rent each month.
Usability and feature bloat
Apollo has come a long way, but the feature bloat is real: of the whole platform, an outbound operator lives in the people and companies tabs and touches almost nothing else. Signals, buying intent, technology scores, education filters: fluff that doesn't build a better list, plus AI features that missed the mark. Prospeo ships maybe a fifth of the surface area and we use about 80% of it. The killer detail is max contacts per company, so a 5,000-person finance list doesn't come back with 500 managing directors from the same firm, and saved recent searches you can re-run and build on instead of starting from scratch each time.
The per-credit math
| Plan compared | Monthly price | Credits | Effective cost |
|---|---|---|---|
| Apollo (top monthly tier at the time) | $149 | ~6,000 | ~2.5 cents per credit |
| Prospeo | $249 | ~15,000 | ~1.7 cents per credit, refresh and Bounceban included |
One credit is one contact, and 6,000 contacts a month is nowhere near the scale cold email needs. Prices move, so treat the ratio as the point, not the exact figures, and check Apollo's pricing and Prospeo's before you commit.
Your database decides your bounce rate before you write a word.
The verdict
Pick Apolloif you want the familiar one-stop shop, you're grabbing occasional lists rather than running a machine, and you're disciplined about verifying every export. It still works; it's just aging, and you're renting data you can never quite trust as current.
Pick Prospeoif outbound is an operation: fresher data, verification baked in, API-first integrations, real list control, and the option to grow a database you own. That's the direction we lean for agency-style volume, and it's not close on workflow.
The database is one decision in a bigger system. How we pull and score lists from it is in Apollo + Claude Code, the enrichment layer is the Clay workflow, and if your comparison shopping continues downstream to sequencers, Smartlead vs Instantly is the same exercise for sending. What good data ultimately protects is deliverability: why cold emails go to spam covers the ceilings.
tl;dr: Apollo for coverage and familiarity with mandatory re-verification; Prospeo for freshness, workflow, and owning your data. At operating scale, we'd take the second.
FAQ
Is Apollo still good for cold email in 2026?
It's still the trusty one-stop shop for grabbing a list, and the coverage is huge. But since LinkedIn banned Apollo's scrapers around March 2025, the data has been aging, the native API is slow and throttled in practice, and you should treat every export as unverified until you run it through a verifier yourself.
Why does Prospeo work out cheaper per credit?
On the plans compared in the training, Apollo's top monthly tier came out around 2.5 cents per credit and Prospeo's around 1.7 cents, and Prospeo's credit includes a 7-day data refresh and a Bounceban verification pass. Pricing moves, so check both current pricing pages before deciding on the math alone.
Do I still need an email verifier with Prospeo?
Prospeo runs every lead through Bounceban, which no other list-building platform we've used does natively. With Apollo, verification is non-negotiable: we push every export through MillionVerifier before it touches a campaign. Belt and suspenders is still the safe default when a domain's reputation is on the line.
Can Prospeo replace Clay?
No, different jobs. Prospeo is the database: sourcing, filtering, and exporting contacts. Clay is the enrichment and research layer on top. Prospeo already plugs into Clay via waterfall enrichment, with a native integration on the way, so the realistic setup is Prospeo (or Apollo) feeding Clay.
How many contacts does Apollo actually have?
With zero filters set, the interface showed 234 million contacts in this comparison; Apollo has marketed over 275 million. Coverage was never Apollo's problem. Freshness is: contact-level data goes stale on the industry-standard 30-to-90-day refresh cycle, which is exactly where Prospeo's 7-day cycle attacks.
If you'd rather not run the comparison, the lists, or any of it yourself, that's the job we do for clients end to end: book a call. The full training is on YouTube, and every video by topic lives on the trainings hub.
PS - whichever database wins you over, the verifier stays. A 6% bounce rate has no subject line that fixes it.