HubSpot is a comprehensive inbound marketing, sales, and service platform designed to help businesses attract visitors, convert leads, and close customers. Founded in 2006, HubSpot pioneered the concept of inbound marketing and has evolved into an all-in-one CRM platform.

The platform's email marketing capabilities are integrated within its broader Marketing Hub, offering tools for creating, personalizing, and automating email campaigns. HubSpot's approach centers on delivering contextual, relevant content based on a contact's behavior, preferences, and position in the buyer's journey.

HubSpot provides drag-and-drop email builders, A/B testing, personalization tokens, list segmentation, and detailed performance analytics. Its strength lies in connecting email marketing with other customer touchpoints through its unified CRM, enabling marketers to create cohesive experiences across channels.

The platform is particularly popular among B2B companies, professional services firms, and growth-oriented businesses that value an integrated approach to marketing, sales, and customer service. HubSpot's focus on the entire customer lifecycle, rather than just email campaigns, distinguishes it from standalone email service providers.