skip auto-reply and csat send when contact has no email

internal/conversation/conversation.go

@@ -1287,6 +1287,9 @@ func (m *Manager) ApplyAction(action amodels.RuleAction, conv models.Conversatio
 	case amodels.ActionReply:
 		// Automated replies always go to the contact only. CCs from the
 		// conversation history are deliberately not carried forward.
+		if conv.Contact.Email.String == "" {
+			return fmt.Errorf("auto-reply skipped: contact has no email for conversation: %s", conv.UUID)
+		}
 		_, err := m.QueueReply(
 			[]mmodels.Media{},
 			conv.InboxID,
@@ -1356,8 +1359,12 @@ func (m *Manager) RemoveConversationAssignee(uuid, typ string, actor umodels.Use
 	return nil
 }
 
-// SendCSATReply sends a CSAT reply message to a conversation. No-op if one was already sent.
+// SendCSATReply sends a CSAT reply message to a conversation. No-op if one was already sent or contact has no email.
 func (m *Manager) SendCSATReply(actorUserID int, conversation models.Conversation) error {
+	if conversation.Contact.Email.String == "" {
+		m.lo.Info("CSAT reply skipped: contact has no email for conversation: %s", "conversation_uuid", conversation.UUID)
+		return nil
+	}
 	csatResp, err := m.csatStore.Create(conversation.ID)
 	if err != nil {
 		if errors.Is(err, csat.ErrCSATAlreadyExists) {