Lead411 vs SignalHire

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.

SignalHire is a contact search and enrichment service for recruiters, sales professionals, and marketers. It provides professional email addresses and phone numbers, including direct-dial data, and lets users filter profiles by name, title, company, and location. Its database page describes more than 900 million professional profiles and more than 30 million companies. Users can enrich up to 1,000 profiles at a time, and SignalHire says it checks emails with third-party verification tools before displaying contact details. The service also offers multi-step email sequences with tracking, reply pauses, send windows, and analytics, using Outlook/Microsoft 365 or a company-domain mailbox. Its API has Person and Search endpoints; Company API access is available on request through support. The browser extension can find contact details on social and professional sites, with downloads linked for Chrome, Firefox, Edge, and Opera. Integrations include ATS and CRM tools such as Salesforce, HubSpot, Zoho Recruit, Pipedrive, Recruitee, and Ashby. The Free plan is free and provides 5 credits; installing the extension provides 10 free credits each month. The listed monthly paid plans are $69 a month.