Best B2B Data Providers for Insightly

With a clear understanding of the businesses interested in your product or service, identifying the right contacts becomes a breeze! Our extensive B2B contact database boasts over 706 million entries, making it one of the most comprehensive collections globally. You're guaranteed to locate the individual you need to reach out to, along with their colleagues!

UpLead, a B2B prospecting platform, provides the highest quality B2B contacts & company data. Features include email verification in real time, worldwide contacts in more than 200 countries, 50+ search criteria and technology tracking. They also offer account-based marketing, email pattern intelligence, social profiles links, Salesforce integrations, robust API, and other CRM integrations.

Lead411 provides company intelligence and accurate contact data with direct dials and email addresses. It also offers a sales cadence tool that automates your email/sms outreach.

Reply.io combines AI automation, real-time data, and multichannel engagement to help modern sales teams generate, nurture, and convert leads at scale. The platform’s advanced database of over 1 billion B2B contacts allows users to discover ideal prospects using audience targeting and enrichment tools. Through AI-driven personalization, users can craft dynamic email sequences, automate LinkedIn messages, and even send follow-up calls or SMS from one unified dashboard. Its flagship Jason AI SDR agent autonomously handles outreach—analyzing data, generating messages, and scheduling meetings on behalf of the team. Reply.io’s robust email deliverability suite ensures that every message reaches the right inbox with features like domain warm-ups, spam prevention, and reputation tracking. Sales teams can manage every stage of the pipeline—discovery, engagement, and conversion—without switching tools. Seamless integrations with CRMs, calendars, and marketing platforms make it easy to sync activities and track performance. With over a decade of innovation, Reply.io remains the go-to automation partner for businesses looking to humanize and scale sales outreach through AI.