This is all you get:
- Preview your messages without leaving your inbox
- Send back messages with a single click using
- Download any attachment with a single click
Anything that turns out to be economical in terms of clicks is MOST welcome to me!!!
You can get this sexy extension here: AJAX Yahoo! Mail (Viamatic Webmail++)
A snapshot of what you get out of this extension...
(Lookout for 'Instant Reply' link at right hand bottom corner and +/- sign near message header)
AJAX is new type web application architecture, check this out for more details.