diff --git a/main.go b/main.go
index a31fcd9..523769f 100644
--- a/main.go
+++ b/main.go
@@ -52,7 +52,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	if valid := isValidEmail(email); !valid {
+	if valid := email == "*" || isValidEmail(email); !valid {
 		fmt.Fprintln(os.Stderr, color.Red.Sprintf("gitcs: invalid 'email' address"))
 		os.Exit(1)
 	}
diff --git a/stats.go b/stats.go
index ca06edf..4d3e40f 100644
--- a/stats.go
+++ b/stats.go
@@ -24,7 +24,7 @@ func fillCommits(path, email string, commits map[int]int, b Boundary, mu *sync.M
 	}
 
 	err = commitIterator.ForEach(func(c *object.Commit) error {
-		if c.Author.Email != email {
+		if email != "*" && c.Author.Email != email {
 			return nil
 		}