5,294 companies use Barracuda, as of October 2026.
Barracuda: Email security. We've found 5,294 companies using Barracuda, most often in Healthcare (19%) and IT Services (9%), typically with 51–200 employees and 64% based in United States.
Customers5,294companies use it
Most popular withBanking2.4× more likely than average
Typical customer51–200employees · mostly United States
We've found 5,294 companies using Barracuda among the 179,026 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use Barracuda?
Barracuda customers are most often in Healthcare (19%), IT Services (9%) and Financial Services (8%). The most common company size is 51–200 employees (55% of customers with a known size).
Which countries use Barracuda the most?
Most Barracuda customers we've found are in United States (64%), United Kingdom (11%) and Canada (5%).
What are the alternatives to Barracuda?
The most used alternatives in the same category are GlobalSign (24,432 companies), Let's Encrypt (20,923 companies), Proofpoint (19,535 companies) and reCAPTCHA (17,073 companies).
How does runsonwhat know a company uses Barracuda?
We read public traces only. For Barracuda that means the company's email records (SPF, MX, DKIM), a subdomain that points at Barracuda and the company's published subprocessor list. Every match keeps the record it came from.