diff --git a/private/post/sender.go b/private/post/sender.go
index c569b72e5..d6880f454 100644
--- a/private/post/sender.go
+++ b/private/post/sender.go
@@ -55,18 +55,20 @@ func (sender *SMTPSender) communicate(ctx context.Context, client *smtp.Client,
 	// before creating SMTPSender
 	host, _, _ := net.SplitHostPort(sender.ServerAddress)
 
-	// send smtp hello or ehlo msg and establish connection over tls
-	err := client.StartTLS(&tls.Config{ServerName: host})
-	if err != nil {
-		return err
+	if sender.Auth != nil {
+		// send smtp hello or ehlo msg and establish connection over tls
+		err := client.StartTLS(&tls.Config{ServerName: host})
+		if err != nil {
+			return err
+		}
+
+		err = client.Auth(sender.Auth)
+		if err != nil {
+			return err
+		}
 	}
 
-	err = client.Auth(sender.Auth)
-	if err != nil {
-		return err
-	}
-
-	err = client.Mail(sender.From.Address)
+	err := client.Mail(sender.From.Address)
 	if err != nil {
 		return err
 	}
diff --git a/satellite/peer.go b/satellite/peer.go
index d32a3bf5d..8ad063e8e 100644
--- a/satellite/peer.go
+++ b/satellite/peer.go
@@ -276,6 +276,11 @@ func setupMailService(log *zap.Logger, config Config) (*mailservice.Service, err
 			},
 			ServerAddress: mailConfig.SMTPServerAddress,
 		}
+	case "insecure":
+		sender = &post.SMTPSender{
+			From:          *from,
+			ServerAddress: mailConfig.SMTPServerAddress,
+		}
 	case "nomail":
 		sender = simulate.NoMail{}
 	default: