diff --git a/man/certspotter.md b/man/certspotter.md
index 649c5cb..bf8bf51 100644
--- a/man/certspotter.md
+++ b/man/certspotter.md
@@ -220,7 +220,7 @@ and non-zero when a serious error occurs.
 
 `SENDMAIL_PATH`
 
-:   Path to the sendmail binary. Defaults to `/usr/sbin/sendmail`.
+:   Path to the sendmail binary used for sending emails. Defaults to `/usr/sbin/sendmail`.
 
 # SEE ALSO