Apollo

  • HubSpot

    HubSpot is the dominant CRM platform for SMB-to-mid-market B2B companies, offering an integrated suite covering marketing automation, sales engagement, customer service, and CMS — the default organizational system of record for companies from seed through Series B. HubSpot reported Q2 2026 revenue of $911.7M (up 20% year over year) and 306,446 customers as of June 30, 2026, and guides to $3.678–$3.686B of revenue for FY2026.

  • Smartlead

    Smartlead is a cold email infrastructure platform built for volume, deliverability, and multi-sender orchestration — the dominant choice among GTM engineers running high-throughput outbound in 2025–2026. The platform manages over 1 billion emails sent per month across its customer base (estimated, per company communications) and has grown primarily through product-led growth among technical GTM operators.