Companies that use Cold Email Infrastructure

Source: Analysis of Linkedin bios of 78,430 companies that use Cold Email Infrastructure

I noticed these companies span an incredibly wide range of industries, but they share a common thread: they're mostly B2B service providers and niche product companies that need to proactively reach decision-makers. You've got IT consulting firms, construction companies, business consultants, marketing agencies, staffing firms, and SaaS platforms. What they actually do is help other businesses solve operational problems, whether that's building software, managing facilities, providing specialized talent, or automating workflows. Very few are selling to consumers directly.

The vast majority are small to mid-sized companies, typically between 2-50 employees, with a handful reaching 50-200. Most show no funding stage or are bootstrapped, suggesting these are established service businesses or early-stage startups trying to gain traction. The funded companies are predominantly Series A or B stage tech platforms. What's telling is how many list employee counts but no venture backing, they're real businesses generating revenue but not venture-scale companies.

Source: Analysis of tech stacks from 78,430 companies that use Cold Email Infrastructure

I noticed that companies using Cold Email Infrastructure are heavily invested in outbound sales motions at scale. The overwhelming presence of tools like Instantly, Smart Lead, and ScaledMail tells me these are businesses betting on volume-based prospecting as their primary growth engine. They're not waiting for inbound leads. They're actively hunting for customers through systematic, automated outreach campaigns.

The pairing of Instantly with RB2B is particularly revealing. Instantly helps these companies send thousands of personalized cold emails, while RB2B identifies anonymous website visitors. This suggests a workflow where they're blasting outreach campaigns and simultaneously trying to capture any warm traffic that hits their site, creating multiple touchpoints with prospects. InboxKit appearing so frequently makes perfect sense too because when you're sending high volumes of cold emails, deliverability becomes critical. These companies need to protect their sender reputation and ensure messages actually reach inboxes rather than spam folders.

My analysis shows these are definitively sales-led organizations, likely in early to mid-growth stages where they haven't yet built strong brand recognition or inbound channels. They're probably B2B companies selling to other businesses, since cold email works better in business contexts than consumer markets. The tech stack screams efficiency and automation over high-touch relationship building. These companies are optimizing for reaching as many potential customers as possible, as quickly as possible, with minimal manual effort.