diff --git a/cmd/hungryfox/main.go b/cmd/hungryfox/main.go
index 9a9844e..2327e06 100644
--- a/cmd/hungryfox/main.go
+++ b/cmd/hungryfox/main.go
@@ -117,7 +117,7 @@ func main() {
 		logger.Error().Str("service", "leaks searcher").Str("error", err.Error()).Msg("fail")
 		os.Exit(1)
 	}
-	logger.Debug().Str("service", "leaks searcher").Msg("started")
+	logger.Debug().Str("service", "leaks searcher").Int("workers", numCPUs).Msg("started")
 
 	logger.Debug().Str("service", "state manager").Msg("start")
 	stateManager := &filestate.StateManager{
diff --git a/hungryfox.go b/hungryfox.go
index 79f94ce..e656c92 100644
--- a/hungryfox.go
+++ b/hungryfox.go
@@ -45,14 +45,14 @@ type Repo struct {
 
 type IMessageSender interface {
 	Start() error
-	Send(*Leak) error
+	Send(Leak) error
 	Stop() error
 }
 
 type ILeakSearcher interface {
 	Start() error
 	SetConfig() error
-	Search(*Diff)
+	Search(Diff)
 	Stop() error
 }
 
diff --git a/router/router.go b/router/router.go
index f35e867..5e8d792 100644
--- a/router/router.go
+++ b/router/router.go
@@ -28,19 +28,20 @@ func (r *LeaksRouter) Start() error {
 		return fmt.Errorf("can't parse delay with: %v", err)
 	}
 	r.senders = map[string]hungryfox.IMessageSender{}
-
-	r.senders["email"] = &email.Sender{
-		AuditorEmail: r.Config.SMTP.Recipient,
-		Config: &email.Config{
-			From:        r.Config.SMTP.From,
-			SMTPHost:    r.Config.SMTP.Host,
-			SMTPPort:    r.Config.SMTP.Port,
-			InsecureTLS: !r.Config.SMTP.TLS,
-			Username:    r.Config.SMTP.Username,
-			Password:    r.Config.SMTP.Password,
-			Delay:       delay,
-		},
-		Log: r.Log,
+	if r.Config.SMTP.Enable {
+		r.senders["email"] = &email.Sender{
+			AuditorEmail: r.Config.SMTP.Recipient,
+			Config: &email.Config{
+				From:        r.Config.SMTP.From,
+				SMTPHost:    r.Config.SMTP.Host,
+				SMTPPort:    r.Config.SMTP.Port,
+				InsecureTLS: !r.Config.SMTP.TLS,
+				Username:    r.Config.SMTP.Username,
+				Password:    r.Config.SMTP.Password,
+				Delay:       delay,
+			},
+			Log: r.Log,
+		}
 	}
 	r.senders["file"] = &file.File{
 		LeaksFile: r.Config.Common.LeaksFile,
@@ -60,7 +61,7 @@ func (r *LeaksRouter) Start() error {
 				return nil
 			case leak := <-r.LeakChannel:
 				for _, sender := range r.senders {
-					sender.Send(leak)
+					sender.Send(*leak)
 				}
 			}
 		}
diff --git a/searcher/searcher.go b/searcher/searcher.go
index b3123e8..8d7cebc 100644
--- a/searcher/searcher.go
+++ b/searcher/searcher.go
@@ -104,12 +104,12 @@ func (s *Searcher) worker() error {
 		case diff := <-s.DiffChannel:
 			leaks := s.GetLeaks(*diff)
 			filtredLeaks := 0
-			for _, leak := range leaks {
-				if s.filterLeak(leak) {
+			for i := range leaks {
+				if s.filterLeak(leaks[i]) {
 					filtredLeaks++
 					continue
 				}
-				s.LeakChannel <- &leak
+				s.LeakChannel <- &leaks[i]
 			}
 			leaksCount := len(leaks) - filtredLeaks
 			if leaksCount > 0 || filtredLeaks > 0 {
@@ -214,7 +214,7 @@ func (s *Searcher) GetLeaks(diff hungryfox.Diff) []hungryfox.Leak {
 				if len(line) > 1024 {
 					line = line[:1024]
 				}
-				leak := hungryfox.Leak{
+				leaks = append(leaks, hungryfox.Leak{
 					RepoPath:     diff.RepoPath,
 					FilePath:     diff.FilePath,
 					PatternName:  pattern.Name,
@@ -225,8 +225,7 @@ func (s *Searcher) GetLeaks(diff hungryfox.Diff) []hungryfox.Leak {
 					CommitAuthor: diff.Author,
 					CommitEmail:  diff.AuthorEmail,
 					RepoURL:      diff.RepoURL,
-				}
-				leaks = append(leaks, leak)
+				})
 			}
 		}
 	}
diff --git a/senders/email/sender.go b/senders/email/sender.go
index 8597645..1e60312 100644
--- a/senders/email/sender.go
+++ b/senders/email/sender.go
@@ -21,7 +21,7 @@ type mailTemplateStruct struct {
 
 type mailTemplateRepoStruct struct {
 	RepoURL string
-	Items   []*hungryfox.Leak
+	Items   []hungryfox.Leak
 }
 
 func (s *Sender) batchMaker() muster.Batch {
@@ -58,7 +58,7 @@ func (b *batch) Fire(notifier muster.Notifier) {
 }
 
 func (b *batch) Add(item interface{}) {
-	leak := item.(*hungryfox.Leak)
+	leak := item.(hungryfox.Leak)
 	leak.LeakString = strings.TrimSpace(leak.LeakString)
 	if len(leak.LeakString) > 512 {
 		leak.LeakString = "too long"
@@ -66,7 +66,7 @@ func (b *batch) Add(item interface{}) {
 	if b.Repos[leak.RepoURL] == nil {
 		b.Repos[leak.RepoURL] = &mailTemplateRepoStruct{
 			RepoURL: leak.RepoURL,
-			Items:   []*hungryfox.Leak{},
+			Items:   []hungryfox.Leak{},
 		}
 	}
 	b.Repos[leak.RepoURL].Items = append(b.Repos[leak.RepoURL].Items, leak)
diff --git a/senders/email/server.go b/senders/email/server.go
index 5e90c9d..20445c6 100644
--- a/senders/email/server.go
+++ b/senders/email/server.go
@@ -76,7 +76,7 @@ func (s *Sender) Stop() error {
 }
 
 // Send - send leaks
-func (s *Sender) Send(leak *hungryfox.Leak) error {
+func (s *Sender) Send(leak hungryfox.Leak) error {
 	s.muster.Work <- leak
 	return nil
 }
diff --git a/senders/file/file.go b/senders/file/file.go
index 2e47043..f14e408 100644
--- a/senders/file/file.go
+++ b/senders/file/file.go
@@ -19,7 +19,7 @@ func (self *File) Stop() error {
 	return nil
 }
 
-func (self *File) Send(leak *hungryfox.Leak) error {
+func (self *File) Send(leak hungryfox.Leak) error {
 	f, err := os.OpenFile(self.LeaksFile, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0644)
 	if err != nil {
 		return err