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Lead Onion
Portstewart, Northern Ireland
What it is
Lead Onion is a web-based go-to-market intelligence platform for finding companies and sales prospects through buyer-intent data. It provides access to 209 million verified leads and companies and combines intent information from more than 20 premium sources. The platform says it tracks signals across 24 sources in real time, with each in-market account linked to decision-makers at 99% verification. Prospect Search includes direct dials, validated emails, and more than 30 firmographic and engagement filters. Website Identification shows companies and people visiting a site and what they are researching. Leadflows route verified contacts to cadences, workflows, or pipelines. Integrations include Salesforce, HubSpot, Microsoft Dynamics, LinkedIn Ads, Slack, and Zapier, which connects to thousands of apps without code. Intent Search offers a seven-day free trial with 50 free intent-qualified leads and no credit card. Pricing starts at $500/mo; there is no free plan. Lead Onion is headquartered in Portstewart, Northern Ireland.
For and against
For
- Access to 209 million verified leads and companies
- Intent data unified from more than 20 sources
- Website visitor identification shows research activity
- Leadflows route contacts into sales workflows
- Seven-day trial includes 50 free IQLs
Against
- Pricing starts at $500/mo
- There is no free plan
- Some person-based intent features use US contacts
- Enterprise pricing is listed as POA
The verdict
Lead Onion combines large contact coverage with real-time intent signals, website identification, and workflow routing. Its trial offers a limited way to explore Intent Search before choosing a paid plan.
Who it suits
Lead Onion suits sales and marketing teams seeking verified contacts, account identification, intent signals, and CRM or workflow connections.
Plans and prices
Starter
Read 30 Sep 2026 · leadonion.ai
Growth
Read 30 Sep 2026 · leadonion.ai
Lead Onion Growth
100 Intent Triggers · 3000 Contact Reveals · 10 Users · Person Based Intent
Read 30 Sep 2026 · leadonion.ai
Scale
Read 30 Sep 2026 · leadonion.ai
Enterprise
Read 30 Sep 2026 · leadonion.ai
On the record
- Backups
- Lead Onion states that it backs up its database four times per day.leadonion.ai · read 30 Sep 2026
- Buyer verification
- Lead Onion states that every in-market account is linked to decision-makers with 99% verification.leadonion.ai · read 30 Sep 2026
- Contact search
- Prospect Search includes direct dials, validated emails and more than 30 firmographic and engagement filters.leadonion.ai · read 30 Sep 2026
- GTM intelligence platform
- Lead Onion is an AI-powered GTM intelligence platform providing access to 209 million verified leads and companies.leadonion.ai · read 30 Sep 2026
- Hosting security
- Lead Onion says its platform is hosted in a UK data centre, protected by a firewall and encrypted in transit.leadonion.ai · read 30 Sep 2026
- Integrations
- Lead Onion lists Salesforce, HubSpot, Microsoft Dynamics, LinkedIn Ads, Slack and Zapier integrations.leadonion.ai · read 30 Sep 2026
- Intent coverage
- Lead Onion tracks billions of buyer-intent signals across 24 sources in real time.leadonion.ai · read 30 Sep 2026
- Intent qualified leads
- Intent Search provides a 7-day free trial with 50 free IQLs and no credit card required.leadonion.ai · read 30 Sep 2026
- Multi-source intent
- The platform unifies intent data from more than 20 premium data sources into one view.leadonion.ai · read 30 Sep 2026
- Penetration testing
- The latest penetration test was performed in April 2025 by NCC Group, a CREST-certified tester.leadonion.ai · read 30 Sep 2026
- Privacy compliance
- The Trust Centre lists GDPR and CPRA compliance and ISO 27001 certification with 2026 status pending.leadonion.ai · read 30 Sep 2026
- Sales automation
- Leadflows route verified contacts automatically to cadences, workflows or pipelines.leadonion.ai · read 30 Sep 2026
- US contact limitation
- Person-based topic, competitor, event and website intent features are marked as using US-based contacts.leadonion.ai · read 30 Sep 2026
- Website identification
- Website Identification reveals companies and people visiting a website, including what they are researching.leadonion.ai · read 30 Sep 2026
- Zapier connectivity
- The Zapier integration connects Lead Onion to thousands of apps without code.leadonion.ai · read 30 Sep 2026
