diff --git a/src/transport/sendmail/mod.rs b/src/transport/sendmail/mod.rs
index 4eb854a..82ef2f0 100644
--- a/src/transport/sendmail/mod.rs
+++ b/src/transport/sendmail/mod.rs
@@ -80,7 +80,7 @@ mod error;
 const DEFAUT_SENDMAIL: &str = "/usr/sbin/sendmail";
 
 /// Sends an email using the `sendmail` command
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct SendmailTransport {
     command: OsString,