10,503 companies use Exclaimer, as of October 2026.
Exclaimer: Email signature management. We've found 10,503 companies using Exclaimer, most often in IT Services (15%) and Healthcare (10%), typically with 51–200 employees and 26% based in United States.
Customers10,503companies use it
Most popular withHouse-building9.1× more likely than average
Typical customer51–200employees · mostly United States
We've found 10,503 companies using Exclaimer among the 178,357 we've scanned so far. We only count a company when a direct public record backs it up.
What kind of companies use Exclaimer?
Exclaimer customers are most often in IT Services (15%), Healthcare (10%) and Financial Services (9%). The most common company size is 51–200 employees (58% of customers with a known size).
Which countries use Exclaimer the most?
Most Exclaimer customers we've found are in United States (26%), United Kingdom (18%) and Germany (14%).
What are the alternatives to Exclaimer?
The most used alternatives in the same category are Microsoft 365 (216,684 companies), Google Workspace (105,596 companies), Apple Business (46,985 companies) and Tencent Exmail (2,655 companies).
How does runsonwhat know a company uses Exclaimer?
We read public traces only. For Exclaimer that means the company's email records (SPF, MX, DKIM) and the company's published subprocessor list. Every match keeps the record it came from.