diff --git a/go/config/config.go b/go/config/config.go
index 6fc76f8..cca9025 100644
--- a/go/config/config.go
+++ b/go/config/config.go
@@ -40,6 +40,10 @@ type FolderFilter struct {
 
 type MessageFilter struct {
 	Since string `json:"since,omitempty"`
+	// TODO: Add keyword filtering support
+	// SubjectKeywords []string `json:"subjectKeywords,omitempty"` // Filter by keywords in subject
+	// SenderKeywords  []string `json:"senderKeywords,omitempty"`  // Filter by keywords in sender addresses  
+	// RecipientKeywords []string `json:"recipientKeywords,omitempty"` // Filter by keywords in recipient addresses
 }
 
 func LoadConfig(path string) (*Config, error) {