使用gmail进行IMAP APPEND，视为新收到的电子邮件

I have successfully got my nodejs app to IMAP "APPEND" a new message to Gmail, with custom date/time. Everything works fine. But, how do I make Gmail treat it as actual new incoming email? (which needs to be sorted based on existing filters, pushed to spam if needed,etc). Basically all the functions carried out on new incoming email by Gmail. Is there any such event that can be raised on the newly created email, maybe something using its UID? Does Gmail support such functionality through IMAP?I have successfully got my nodejs app to IMAP "