diff --git a/internal/cmd/mail.go b/internal/cmd/mail.go
index 2138d982..f131a678 100644
--- a/internal/cmd/mail.go
+++ b/internal/cmd/mail.go
@@ -55,6 +55,9 @@ var (
 
 	// Announces flags
 	mailAnnouncesJSON bool
+
+	// Clear flags
+	mailClearAll bool
 )
 
 var mailCmd = &cobra.Command{
@@ -438,6 +441,9 @@ func init() {
 	// Announces flags
 	mailAnnouncesCmd.Flags().BoolVar(&mailAnnouncesJSON, "json", false, "Output as JSON")
 
+	// Clear flags
+	mailClearCmd.Flags().BoolVar(&mailClearAll, "all", false, "Clear all messages (default behavior)")
+
 	// Add subcommands
 	mailCmd.AddCommand(mailSendCmd)
 	mailCmd.AddCommand(mailInboxCmd)