Yahoo Mail quote original message

"First, as you have, select the preference to mark the original email with a chevron (>).

Then, when replying, look at the end of the subject line and click on Plain Text. This will convert the entire email to plain text format and will include "">"" on each line.

The link at the end of the subject field will now read Rich Text. Click on that.

This will convert the email back to HTML formatting, but keep the chevrons. You can now reply with HTML formatting on your text, but still have the original message marked out with "">"" on each line.

A side-effect is that it renders the original email without any of the formatting it had originally, like colours, tables and images."