diff --git a/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java b/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java
index c65beaa..f4e34eb 100644
--- a/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java
+++ b/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java
@@ -35,6 +35,15 @@
         return u;
     }
 
+    public ArrayList<String> getAllEmails() {
+        ArrayList<String> emails = new ArrayList<>();
+        for (String key : userMap.keySet()) {
+            User user = getUser(key);
+            emails.add(user.getEmail());
+        }
+        return emails;
+    }
+
     public User deleteUser(String userId) {//ユーザー情報の削除
         return userMap.remove(userId);
     }
diff --git a/src/test/java/org/ntlab/tampoposerver/repositories/UserRepositoryTest.java b/src/test/java/org/ntlab/tampoposerver/repositories/UserRepositoryTest.java
index 6ac9843..3bbeee6 100644
--- a/src/test/java/org/ntlab/tampoposerver/repositories/UserRepositoryTest.java
+++ b/src/test/java/org/ntlab/tampoposerver/repositories/UserRepositoryTest.java
@@ -19,9 +19,13 @@
         User u3 = userRepository.addUser("u03", "ghj", "yyi","yijdh@gmail.com","143a876bca878d125");
 //        User u = userRepository.getUser("u02");
         //getAllUsersテスト
-        ArrayList<User> users = userRepository.getAllUsers();
-        for (User u : users) {
-            System.out.println(u.getUserId());
+//        ArrayList<User> users = userRepository.getAllUsers();
+//        for (User u : users) {
+//            System.out.println(u.getUserId());
+//        }
+        ArrayList<String> emails = userRepository.getAllEmails();
+        for (String email : emails) {
+            System.out.println(email);
         }
 //        System.out.println(users);
 //        assertEquals(u2, u);