Custom Notification type

Ben Tiedt i had implemented this as below , using he controller i was generating the notifications when a custom comment is created ,

public class IdeaChatNotificationType : INotificationType , ISingletonPlugin
	{
		private INotificationController _notificationController;
		public string NotificationTypeName => "Ideas Chat";

		public string NotificationTypeDescription => "Idea Internal Chat";

		public string NotificationTypeCategory => "Idea Internal Chat";

		public Guid NotificationTypeId => new Guid("b25aa3c5-a3f9-4c23-a295-a6425b87b030");

		public bool IsCacheable => true;

		public bool VaryCacheByUser => true;

		public string Name => "Ideas Internal Chat Notifications";

		public string Description => "Raises Notification for Ideas Internal Chat Members";

		public bool CanDeleteNotification(Guid notificationId, int userId)
		{
			return true;
		}

		public string GetMessage(Guid notificationId, [Documentation("Target", OptionsType = typeof(NotificationTarget))] string target)
		{
			var notification = Apis.Get<INotifications>().Get(notificationId);
			if (notification == null) { return null; }

			return "A new [Internal Idea Chat] Comment added ";
		}

		public string GetTargetUrl(Guid notificationId) 
		{
			var notification = Apis.Get<INotifications>().Get(notificationId);
			return notification != null && notification.Content != null ? notification.Content.Url : null;
		}

		public void Initialize()
		{

		}

		public void SetController(INotificationController controller)
		{
			_notificationController = controller;
		}

		public void CreateNotification(Guid contentId, Guid contentTypeId,string url, int contentAuthor, int subscriberId)
		{
			_notificationController.CreateUpdate(new NotificationCreateUpdateOptions
			{
				ContentId = contentId,
				ContentTypeId = contentTypeId,
				ContentUrl = url,
				LastUpdate = DateTime.UtcNow,
				UserId = subscriberId,
				ActorIdToAdd = contentAuthor
			});
		}
	}

i was triggering the schedular job to generate notifications and send emails ,

public void Execute(JobData jobData)
		{
			try
			{
				int userId = int.Parse(jobData.Data["userId"]);
				var data = jobData.Data["body"];
				Guid id = Guid.Parse(jobData.Data["id"]);
				string role = pluginConfiguration.GetCustom("role").Replace("Role=", "").Trim();
				int roleid = int.Parse(role);

				var roleobj = Apis.Get<IRoles>().Get(roleid);
				if (roleobj == null) return;

				var user = Apis.Get<IUsers>().Get(new UsersGetOptions { Id = userId });
				var _ideaapi = Apis.Get<IIdeas>(); 
				var idea = _ideaapi.Get(id);
				if (user == null) return;
				if (idea == null) return;
				string subject = string.Format("Idea chat : {0} - {1} ", idea.Challenge.Group.Name, idea.Name);
				string body = "<div><p style=\"font-size: 12pt; margin-top: 0;\">New chat comment on  @@title by @@displayname</p><p>@@body</p><div style=\"clear: both;\"></div><p><span style=\"color: #0087c3; text-decoration: none;\"><a href=\"@@url\" >View online</a></span></div>";
				body = body.Replace("@@title", idea.Name).Replace("@@displayname", user.DisplayName).Replace("@@body", data).Replace("@@url", idea.Url);
				
				string[] rolename = new string[] { roleobj.Name };
				var notificationplugin = PluginManager.GetSingleton<IdeaChatNotificationType>();
				
				var done = false;
				var pageIndex = 0;
				while (!done)
				{
					var growners = Apis.Get<IGroupUserMembers>().List(idea.Challenge.Group.Id.Value, new GroupUserMembersListOptions { IncludeRoleMembers = true, PageSize = 100, PageIndex = pageIndex });
					var _roleapi = Apis.Get<IRoleUsers>();
					var _emaiapi = Apis.Get<ISendEmail>();
					var _users = Apis.Get<IUsers>();
					var _notifications = Apis.Get<INotifications>();
					bool send = false;
					Guid nottypeid = new Guid("b25aa3c5-a3f9-4c23-a295-a6425b87b030");
					Guid distypeid = new Guid("0d3948d6-aabc-4a58-b30a-1e46eda9abe8");

					foreach (var owner in growners)
					{
						if (_roleapi.IsUserInRoles(owner.User.Username, rolename))
						{
							_users.RunAsUser(owner.User.Username, () => {

								var preferences = _notifications.ListPreferences();
								var dd = preferences.Preferences.FirstOrDefault(x => (x.NotificationTypeId == nottypeid && x.DistributionTypeId == null));
								if (dd != null && dd.IsEnabled)
								{
									var per = preferences.Preferences.First(x => (x.NotificationTypeId == nottypeid && x.DistributionTypeId == distypeid));
									send = per.IsEnabled;
								}

								


							});

							
							if (send) _emaiapi.Send(new SendEmailOptions { Subject = subject, Body = body, ToEmail = owner.User.PrivateEmail });
							notificationplugin.CreateNotification(idea.ContentId, _ideaapi.ContentTypeId , idea.Url, userId, owner.User.Id.Value);
							send = false;
						}
					}

					if (growners.TotalCount <= 100 * (pageIndex + 1)) done = true;
					pageIndex++;

				}

				
			}
			catch(Exception e)
			{
				throw e;
			}
			
		}

Notifications and Emails are delivered as expected but, 

We are receiving two emails the one we created  and the other system generated

system-generated is below 

so is there a way to restrict the system genrated email since we already generated one . Please correct me if i was in a wrong path

Thanks

Email is already a distribution type -- a notification type should not send any notification messages because they will be sent by the enabled notification distribution types. The notification type is only responsible for generating the message so that notification distribution types can send them, the notification type itself does not send the message it creates.