diff --git a/sam/service/channel.go b/sam/service/channel.go
index 1cd9ddd7c..c074ca0ea 100644
--- a/sam/service/channel.go
+++ b/sam/service/channel.go
@@ -246,16 +246,21 @@ func (svc channel) Update(ctx context.Context, in *types.Channel) (out *types.Ch
 
 func (svc channel) Delete(ctx context.Context, id uint64) error {
 	return svc.rpo.BeginWith(ctx, func(r repository.Interfaces) (err error) {
+		var userID = auth.GetIdentityFromContext(ctx).Identity()
 		var ch *types.Channel
 
+		// @todo [SECURITY] can user access this channel?
+		if ch, err = r.FindChannelByID(id); err != nil {
+			return
+		}
+
 		// @todo [SECURITY] can user delete this channel?
 
 		if ch.DeletedAt != nil {
 			return errors.New("Channel already deleted")
 		}
 
-		_, err = r.CreateMessage(svc.makeSystemMessage(ch,
-			"%s deleted this channel"))
+		_, err = r.CreateMessage(svc.makeSystemMessage(ch, "@%d deleted this channel", userID))
 
 		return r.DeleteChannelByID(id)
 	})
@@ -263,16 +268,21 @@ func (svc channel) Delete(ctx context.Context, id uint64) error {
 
 func (svc channel) Recover(ctx context.Context, id uint64) error {
 	return svc.rpo.BeginWith(ctx, func(r repository.Interfaces) (err error) {
+		var userID = auth.GetIdentityFromContext(ctx).Identity()
 		var ch *types.Channel
 
+		// @todo [SECURITY] can user access this channel?
+		if ch, err = r.FindChannelByID(id); err != nil {
+			return
+		}
+
 		// @todo [SECURITY] can user recover this channel?
 
 		if ch.DeletedAt == nil {
 			return errors.New("Channel not deleted")
 		}
 
-		_, err = r.CreateMessage(svc.makeSystemMessage(ch,
-			"%s recovered this channel"))
+		_, err = r.CreateMessage(svc.makeSystemMessage(ch, "@%d recovered this channel", userID))
 
 		return r.DeleteChannelByID(id)
 	})
@@ -280,16 +290,21 @@ func (svc channel) Recover(ctx context.Context, id uint64) error {
 
 func (svc channel) Archive(ctx context.Context, id uint64) error {
 	return svc.rpo.BeginWith(ctx, func(r repository.Interfaces) (err error) {
+		var userID = auth.GetIdentityFromContext(ctx).Identity()
 		var ch *types.Channel
 
+		// @todo [SECURITY] can user access this channel?
+		if ch, err = r.FindChannelByID(id); err != nil {
+			return
+		}
+
 		// @todo [SECURITY] can user archive this channel?
 
 		if ch.ArchivedAt != nil {
 			return errors.New("Channel already archived")
 		}
 
-		_, err = r.CreateMessage(svc.makeSystemMessage(ch,
-			"%s archived this channel"))
+		_, err = r.CreateMessage(svc.makeSystemMessage(ch, "@%d archived this channel", userID))
 
 		return r.ArchiveChannelByID(id)
 	})
@@ -297,16 +312,21 @@ func (svc channel) Archive(ctx context.Context, id uint64) error {
 
 func (svc channel) Unarchive(ctx context.Context, id uint64) error {
 	return svc.rpo.BeginWith(ctx, func(r repository.Interfaces) (err error) {
+		var userID = auth.GetIdentityFromContext(ctx).Identity()
 		var ch *types.Channel
 
+		// @todo [SECURITY] can user access this channel?
+		if ch, err = r.FindChannelByID(id); err != nil {
+			return
+		}
+
 		// @todo [SECURITY] can user unarchive this channel?
 
 		if ch.ArchivedAt == nil {
 			return errors.New("Channel not archived")
 		}
 
-		_, err = r.CreateMessage(svc.makeSystemMessage(ch,
-			"%s unarchived this channel"))
+		_, err = r.CreateMessage(svc.makeSystemMessage(ch, "@%d unarchived this channel", userID))
 
 		return r.ArchiveChannelByID(id)
 	})