1,103 companies use OpenSRS Hosted Email, as of October 2026.
OpenSRS Hosted Email: Hosted business email (Tucows). We've found 1,103 companies using OpenSRS Hosted Email, most often in Retail (15%) and IT Services (13%), typically with 11–50 employees and 56% based in United States.
Customers1,103companies use it
Most popular withConsumer Goods5.9× more likely than average
Typical customer11–50employees · mostly United States
We've found 1,103 companies using OpenSRS Hosted Email among the 322,713 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use OpenSRS Hosted Email?
OpenSRS Hosted Email customers are most often in Retail (15%), IT Services (13%) and Healthcare (10%). The most common company size is 11–50 employees (78% of customers with a known size).
Which countries use OpenSRS Hosted Email the most?
Most OpenSRS Hosted Email customers we've found are in United States (56%), Canada (12%) and United Kingdom (10%).
What are the alternatives to OpenSRS Hosted Email?
The most used alternatives in the same category are Microsoft 365 (434,006 companies), Google Workspace (265,055 companies), Apple Business (60,471 companies) and Exclaimer (16,556 companies).
How does runsonwhat know a company uses OpenSRS Hosted Email?
We read public traces only. For OpenSRS Hosted Email that means a subdomain that points at OpenSRS Hosted Email and the company's published subprocessor list. Every match keeps the record it came from.