Companies that use Paubox

Source: Analysis of Linkedin bios of 209 companies that use Paubox

I noticed that Paubox customers are overwhelmingly healthcare service providers who deliver direct patient care. These aren't technology companies or product manufacturers. They're medical practices, mental health clinics, therapy centers, hospitals, and specialized care facilities. Many focus on behavioral health, addiction treatment, autism services, physical therapy, and senior care. A significant portion operates in what I'd call the "unsexy" parts of healthcare: community health centers, rural hospitals, hospice care, and services for underserved populations.

Most of these companies sit in the 11-200 employee range, with many clustering around 50-150 employees. Very few show venture funding, and when they do, it's modest Series A rounds. The funding stages are often blank or marked as "Grant," suggesting these are stable, established practices rather than startups. Many have been operating for decades. They're not scaling aggressively. They're serving their communities sustainably.

Source: Analysis of tech stacks from 209 companies that use Paubox

I noticed that Paubox users are predominantly healthcare companies, specifically smaller medical practices and healthcare service providers that need to balance patient communication with strict HIPAA compliance requirements. The presence of AdvancedMD, a practice management and electronic health records system, appearing 135 times more frequently tells me these are established healthcare operations managing real patient workflows, not just healthcare-adjacent businesses.

The pairing of Paubox with AdvancedMD makes perfect sense because practices need secure email to communicate patient information that originates in their EHR system. Meanwhile, the strong correlation with Navex One and Ethics Point reveals these organizations take compliance seriously across the board, not just for HIPAA. They're implementing enterprise-grade ethics and compliance programs, which suggests they're either growing practices preparing for audits or have already scaled past the smallest single-provider operations. The Nextiva correlation is particularly telling because it's a business phone system often chosen by companies moving away from basic telephony into integrated communication platforms, another signal of operational maturity.

The full stack reveals these are traditional, sales-led healthcare businesses rather than venture-backed healthcare tech startups. The presence of Zendesk Help Center and Zoom Business indicates they're supporting both patients and likely some B2B customers or partners. These aren't product-led growth companies, they're service businesses that need reliable, compliant infrastructure. I'd estimate most are in the 20 to 200 employee range based on the enterprise compliance tools combined with mid-market communication platforms.