Lead411 vs SalesQL

Lead411 is a B2B contact data and prospecting service with direct-dial data, buyer intent data, technographic filters, and API access. Its Chrome Extension is for browsing LinkedIn and other company websites, and the service integrates with Salesforce, HubSpot, Pipedrive, Outreach.io, and other platforms. Lead411 says its contact data process combines machine learning, human verification, and real-time email validation; it claims 96%+ email deliverability accuracy and a 97% average for optimized verified emails. Direct dials receive human verification and location matching. Most plans offer unlimited lead searches and exports, though some have monthly or yearly limits; unused exports roll over to the next billing cycle. The Pilot plan provides 50 free exports during a 7-day trial. Paid plans start at 49 USD per month. Monthly plans can be canceled at any time; annual-plan options require contacting support. Lead411 says it was founded in 2001 and is headquartered in Boulder, Colorado. It also states that it is a registered data broker under applicable state laws, including Texas law.

SalesQL is a B2B prospecting platform providing professional contact data, including verified emails, phone numbers, and company information. Its database covers 200M+ professionals and supports filters for job title, company, industry, and location. AI search can generate matching leads from a natural-language prospect description. A Chrome extension finds contact details on LinkedIn profiles and search results, including LinkedIn.com, Sales Navigator, Recruiter, Recruiter Lite, and RPS. Campaigns provide email sequences with variables, AI assistance, and automatic follow-ups sent from the user’s inbox. CSV enrichment matches uploaded names, companies, or URL lists and is available on paid plans. Listed integrations include HubSpot, Zoho, Pipedrive, Salesforce, Salesloft, Outreach, Gmail, and Mailchimp, with Zapier connections for listed tools. One credit unlocks available verified email, phone, and company data, and SalesQL says it charges only when results are found. The Free plan is free with 50 credits monthly and one seat. Paid plans start at $39 a month. REST API and MCP are listed for Professional and Premium.