diff --git a/AMESCoreStudio.WebApi/Controllers/BAS/MailGroupsController.cs b/AMESCoreStudio.WebApi/Controllers/BAS/MailGroupsController.cs
index 655d46e6..c7826de1 100644
--- a/AMESCoreStudio.WebApi/Controllers/BAS/MailGroupsController.cs
+++ b/AMESCoreStudio.WebApi/Controllers/BAS/MailGroupsController.cs
@@ -67,6 +67,47 @@ namespace AMESCoreStudio.WebApi.Controllers.BAS
             return mailGroup;
         }
 
+        /// <summary>
+        /// 用群组编号获取该Mail群組资料
+        /// </summary>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        // GET: api/MailGroups/5
+        [Route("[action]")]
+        [HttpGet]
+        public async Task<ResultModel<dynamic>> GetMailList(string id)
+        {
+            ResultModel<dynamic> result = new ResultModel<dynamic>();
+            var q = from a in _context.MailGroups
+                     join b in _context.MailGroupDetails on a.GroupID equals b.GroupID
+                     join c in _context.UserInfoes on b.UserID equals c.UserID
+                     select new
+                     {
+                         a.GroupNo,
+                         a.GroupID,
+                         b.UserID,
+                         c.UserEMail
+                     };
+
+            q = q.Where(w => w.GroupNo.Equals(id));
+
+            //紀錄筆數
+            result.DataTotal = q.Count();
+
+            result.Data = await q.ToListAsync();
+
+            if (result == null)
+            {
+                result.Msg = "查無資料";
+                result.Success = false;
+                return result;
+            }
+
+            result.Success = true;
+            result.Msg = "OK";
+            return result;
+        }
+
         /// <summary>
         /// 更新Mail群組资料
         /// </summary>