How to remove auto additional "RE" in subject when you are answering via web Gmail?
migrated from superuser.com Oct 18 '10 at 9:23
There's a link called "edit subject" that you click on to reveal the text box for the subject line.
But you shouldn't change the subject line, unless your reply really has a different topic (subject)! Here's why:
For one thing, if you edit the line just to remove "RE:" then Gmail will treat the message as a new thread and won't match it to the existing thread -- so you lose the benefit of Gmail's great interface, and so does the recipient. If I were the recipient, I'd be annoyed at this.
Another reason is that putting "RE:" before a response is a tradition and a convention, and there's a reason why every mail program on the planet works this way. It indicates that your message is a REsponse REgarding something you REceived. This is a courtesy towards your recipient. Why would you want to not show your recipient this courtesy?