diff --git a/solanaceae/message3/components.hpp b/solanaceae/message3/components.hpp
index f7fc413..dfed6eb 100644
--- a/solanaceae/message3/components.hpp
+++ b/solanaceae/message3/components.hpp
@@ -30,6 +30,13 @@ namespace Message::Components {
 		uint64_t ts {0};
 	};
 
+	struct TagUnread {};
+
+	struct Read {
+		// TODO: too much?
+		uint64_t ts {0};
+	};
+
 	struct MessageText {
 		std::string text;
 		MessageText(const std::string_view& view) : text(view) {}
diff --git a/solanaceae/message3/components_id.inl b/solanaceae/message3/components_id.inl
index 6aed4bd..2ed9a8f 100644
--- a/solanaceae/message3/components_id.inl
+++ b/solanaceae/message3/components_id.inl
@@ -17,6 +17,8 @@ DEFINE_COMP_ID(Message::Components::ContactTo)
 DEFINE_COMP_ID(Message::Components::Timestamp)
 DEFINE_COMP_ID(Message::Components::TimestampProcessed)
 DEFINE_COMP_ID(Message::Components::TimestampWritten)
+DEFINE_COMP_ID(Message::Components::TagUnread)
+DEFINE_COMP_ID(Message::Components::Read)
 DEFINE_COMP_ID(Message::Components::MessageText)
 DEFINE_COMP_ID(Message::Components::TagMessageIsAction)