★ Yahoo! Mail Easter eggs & hidden tips
So you think you’re a power Yahoo! Mail user ? Do you master all those keyboard shortcuts ? Good. Now here is a list of Yahoo! Mail hidden tips and tricks. It was originally compiled by jakk9406 in the Yahoo! Mail Group. Some are well known by advanced users, some just are plainly useful to everyone.
Ctrl+Alt+Shift+Up/Down
Configure extended navigation
Alt+click on Yahoo! mail logo
Shows version, build, date, farm in popup
Ctrl+alt click on Y! mail logo (Alt + Cmd on a Mac)
Loads “Y! mail beta log”
Ctrl+click on Y! mail logo
Loads Y! mail help in new window
Ctrl+click on message search [Go] button
Shows search tips
Shift+click on message subject
View all messages of a thread (uses search of message subject)
Ctrl+shift click on “Help” menu (Shift+Cmd for Mac)
an extensive menu of advanced controls and links
Ctrl+shift click on Y! mail logo
toggle debug mode (still not sure exactly what this is)
Ctrl+shift click on message search [Go] button (Ctrl click on a Mac)
pop-ups advanced mail search
Ctrl+shift+click on “help”, click “show chat overlay”, reload the page
Get Yahoo! mail beta chat/messenger integration on any farm
Drag message tab to a folder
Move a tabbed message straight to a folder quickly and easily
http://us.mg1.mail.yahoo.com/dc/launch?sysreq=ignore
Run Yahoo! mail beta regardless of system requirements check results (may need to replace mg1 with f###)
http://us.mg1.mail.yahoo.com/ym/login?ymv=0
Takes you to Y! mail classic for current session only (may need to replace mg1 with f###).