diff --git a/source/logic/state_repository.ts b/source/logic/state_repository.ts
index ffa6fc3..0fceb43 100644
--- a/source/logic/state_repository.ts
+++ b/source/logic/state_repository.ts
@@ -109,6 +109,27 @@ namespace _heimdall.state_repository
 	}
 	
 	
+	/**
+	 */
+	export function get_last_notification_timestamp(
+		database_path : string
+		check_name : string
+	) : Promise<(null | int)>
+	{
+		const rows : Array<Array<any>> = await _heimdall.helpers.sqlite.query_get(
+			database_path,
+			{
+				"template": "SELECT MIN(timestamp) FROM results WHERE (check_name = :check_name) AND (notification_sent = TRUE);",
+				"arguments": {
+					"check_name": check_name,
+					"limit": threshold,
+				},
+			}
+		);
+		return rows[0][0];
+	}
+	
+	
 	/**
 	 */
 	export async function feed(