When replying to messages via Yahoo Mail, the original message is displayed below your own. If you engage in a lengthy back-and-forth discussion with someone via email, this can lead to a large and cluttered file. While it can be useful to include the original messages as references, it is rarely necessary. Yahoo Mail does not offer the option to automatically remove the original messages, but using the “quote original ext” option highlights these for easier manual removal. Writer Bio

How Can the Original Message Be Left off the Reply Messages in Yahoo Mail  - 38