Endole vs Seamless.AI: They're Not Competitors - Here's What You Actually Need
Comparing Endole to Seamless.AI is like comparing a credit report to a phone book. One focuses on UK company intelligence - filings, ownership structures, director networks, credit risk. The other is a credit-based contact discovery engine built to surface emails and mobile numbers.
If you're weighing these two, there's a good chance you need contact data. And neither tool is the best way to get it.
30-Second Verdict
Use Endole if you need UK company intelligence - filings, credit risk, director networks, ownership chains. It's a research tool, not a prospecting tool.
Use Seamless.AI if you need a US-centric contact database and you're comfortable with annual contracts, credit burn, and roughly 85% email accuracy.
What Each Tool Actually Does
Endole - UK Company Intelligence
Endole isn't a sales prospecting platform. It's a UK business intelligence tool built around UK corporate records (Companies House-style filings) plus credit and risk data. You get company and director profiles, ownership structures, credit scores, financial histories, and CCJ records. Think of it as the tool your finance team or risk department uses before approving a vendor or extending credit.
Pricing sits at £39/month or £299/year (roughly £25/month). It carries a 4.6/5 on G2, though that's from just 5 reviews - directional, not definitive. One thing worth knowing: UK company financial filings can lag 3-7 quarters behind, so the data won't reflect the latest quarter. The scope is UK-only. If you need deep US coverage, this isn't it.
Seamless.AI - Contact Discovery Engine
Seamless.AI calls itself an "all-in-one AI revenue engine" with 1.8B+ verified business emails and 414M+ mobile numbers. It's positioned as a real-time B2B search engine for contact data: you look up a prospect, it surfaces emails and phone numbers, and each reveal or export burns credits.
Beyond that, there's a growing module ecosystem - Prospector, Buyer Intent, Job Changes, CRM Enrich, Pitch Intelligence, and AI Agents for automated workflows.
Pricing isn't transparent. The free plan gives you 50 lifetime credits, barely enough to test. Basic runs $147/month on annual billing and includes 3,000 credits per year. Pro is typically quoted in the $79-$299/user/month range depending on the deal. Enterprise is custom, and one widely shared pricing example puts it at $149/user/month with a 5-seat minimum ($745/month floor). Extra credit packs run $49 per 500 credits.
Here's the thing about accuracy: a detailed user breakdown puts email accuracy around 85% and phone numbers around 60%. In practice, teams often see 15-30% bounce rates once they start sending at scale. That's workable for some email programs, but rough for cold calling - and it can quietly wreck your domain reputation if you're pushing volume without a verification layer on top. We've seen this pattern repeatedly with teams who switch providers after a deliverability crisis.
On sentiment, Seamless.AI carries a 1.4/5 on Trustpilot across 286 reviews, with cancellation difficulties and auto-renewal complaints dominating. The consensus on Reddit threads mirrors this - the 60-90 day cancellation notice window catches most buyers off guard. Read the contract before you sign.
Seamless.AI's ~85% email accuracy means 15-30% of your outbound is hitting dead inboxes - and quietly wrecking your domain reputation. Prospeo's proprietary 5-step verification delivers 98% accuracy with a 7-day data refresh cycle, so your lists never go stale. No annual contracts, no 60-day cancellation traps.
Stop gambling your domain reputation on unverified contact data.
Side-by-Side Comparison
| Endole | Seamless.AI | Prospeo | |
|---|---|---|---|
| Data type | Company intel | Contact data | Contact data |
| Focus | UK only | US-centric | Global |
| Best for | Due diligence | Outbound prospecting | Verified emails/mobiles |
| Pricing | £39/mo or £299/yr | $79-$299/user/mo | Free; paid from ~$39/mo |
| G2 rating | 4.6/5 (5 reviews) | 4.4/5 (5,319 reviews) | - |
| Contracts | Cancel anytime | Annual; 60-90 day notice | No contracts |
| Compliance | UK-focused | GDPR, CCPA, SOC 2 Type II, ISO 27001 | GDPR compliant |
| Email accuracy | N/A | ~85% | 98% |
When to Use Each
You're vetting UK suppliers or running credit checks. Endole is purpose-built for this. The ownership chains, credit scores, and filings-style records give you a clearer picture of a company's risk profile than any contact discovery tool ever will.
You're running US outbound at scale and can stomach annual contracts. Seamless.AI's search workflow can surface contacts other databases miss, and the AI Agents module adds automation that power users appreciate. Just budget for credit overages and read the cancellation terms carefully. In our experience, the cancellation window catches most buyers off guard. If you want a middle ground between that contract model and a self-serve approach, Apollo.io is another option users frequently bring up in Seamless-related discussions.
You need verified contact data without the overhead. This is where Prospeo fits. You get 98% email accuracy, 125M+ verified mobiles, and a 7-day data refresh cycle - all self-serve, no contracts, GDPR compliant. For the "I need working emails and direct dials" use case, it's the cleaner path.
A Better Option for Contact Prospecting
Let's be honest: most people comparing Endole and Seamless.AI don't need either one. They need reliable contact data that won't torch their domain reputation.
Prospeo covers 300M+ professional profiles with 30+ search filters, including buyer intent powered by Bombora, technographics, job changes, and more. Emails verify at 98% accuracy through a proprietary 5-step process, and mobiles hit a 30% pickup rate. There's a free tier with 75 verified emails per month, paid plans start around $39/month, and you can cancel anytime.
Real-world results back this up: the team at Snyk - 50 AEs prospecting 4-6 hours per week - cut bounce rates from 35-40% to under 5% and grew AE-sourced pipeline by 180%, generating 200+ new opportunities per month. That's the kind of difference accurate data makes when you're operating at scale.
Endole can't give you emails. Seamless.AI charges $147/month for 3,000 annual credits with accuracy that hovers around 85%. Prospeo covers 300M+ profiles globally at 98% email accuracy and 125M+ verified mobiles - starting free, with paid plans from $39/month. Cancel anytime.
Get global contact data that actually connects you to real buyers.
FAQ
Is Endole a Seamless.AI alternative?
No. Endole provides UK company intelligence - filings, credit risk, ownership structures, and director networks. Seamless.AI finds individual contact data like emails and phone numbers. They solve different problems entirely and don't compete in the same category.
What's the cheapest way to get verified emails?
Prospeo's free tier includes 75 verified emails per month with no credit card required - the lowest barrier to entry we've found. Seamless.AI's free plan offers just 50 lifetime credits (not monthly). Endole doesn't provide individual email data at all.