diff --git a/packages/relayer/src/modules/mail.rs b/packages/relayer/src/modules/mail.rs
index 88f67140..ab792c39 100644
--- a/packages/relayer/src/modules/mail.rs
+++ b/packages/relayer/src/modules/mail.rs
@@ -51,6 +51,7 @@ pub enum EmailAuthEvent {
         email_addr: String,
         command: String,
         original_message_id: Option<String>,
+        original_subject: String,
     },
     NoOp,
 }
@@ -335,6 +336,7 @@ pub async fn handle_email_event(event: EmailAuthEvent) -> Result<(), EmailError>
             email_addr,
             command,
             original_message_id,
+            original_subject,
         } => {
             let body_plain = format!(
                 "Hi {}!\nYour email with the command {} is received.",
@@ -342,7 +344,7 @@ pub async fn handle_email_event(event: EmailAuthEvent) -> Result<(), EmailError>
             );
             let render_data = serde_json::json!({"userEmailAddr": email_addr, "request": command});
             let body_html = render_html("acknowledgement.html", render_data).await?;
-            let subject = format!("Acknowledgement");
+            let subject = format!("Re: {}", original_subject);
             let email = EmailMessage {
                 to: email_addr,
                 subject,
diff --git a/packages/relayer/src/modules/web_server/rest_api.rs b/packages/relayer/src/modules/web_server/rest_api.rs
index 7e39b8b5..f099b5fb 100644
--- a/packages/relayer/src/modules/web_server/rest_api.rs
+++ b/packages/relayer/src/modules/web_server/rest_api.rs
@@ -440,11 +440,13 @@ fn parse_error_message(error_data: String) -> String {
 pub async fn receive_email_api_fn(email: String) -> Result<(), ApiError> {
     let parsed_email = ParsedEmail::new_from_raw_email(&email).await?;
     let from_addr = parsed_email.get_from_addr()?;
+    let original_subject = parsed_email.get_subject_all()?;
     tokio::spawn(async move {
         match handle_email_event(EmailAuthEvent::Ack {
             email_addr: from_addr.clone(),
             command: parsed_email.get_command(false).unwrap_or_default(),
             original_message_id: parsed_email.get_message_id().ok(),
+            original_subject,
         })
         .await
         {