Use NIRCMD:

Save & Delay, 2000 & Execute program, "c:\windows\nircmd.exe","sendkeypress c Shift+0xBA 0xDC u s e r s 0xDC" & Delay, 100 & Execute program, "c:\windows\nircmd.exe","sendkeypress u s e r SPC n a m e 0xDC" & Delay,500 & Execute program, "c:\windows\nircmd.exe","sendkeypress ENTER"

but ........ I could not seems able to understand how above could make it happen " DURING YOU CLICK THE ATTACHMENT IN THE MAIL ".

my original idea is I want permanent items place here ., such as following save to Download folder :

Save to my Dropbox

Save to Asus Webstorage

Save as

Hope you understand my meaning I want to add customize item from picture above shows .........

Thank you very much.
edmond.

which file ( index.ini ? ) & which section to add so that it can appear your command item in HERE ?

Thank you very much.
edmond.

any idea.............. ?

It's possible.
Use NIRCMD:

Save & Delay, 2000 & Execute program, "c:\windows\nircmd.exe","sendkeypress c Shift+0xBA 0xDC u s e r s 0xDC" & Delay, 100 & Execute program, "c:\windows\nircmd.exe","sendkeypress u s e r SPC n a m e 0xDC" & Delay,500 & Execute program, "c:\windows\nircmd.exe","sendkeypress ENTER"

Where is:

Shift+0xBA - character : (colon)

0xDC - character SLASH

SPC - SPACE character

!!!
This is an example. This changing automatically a saving folder for a file to the custom path "C:\Users\user name"). You need to modify this to add your own full path (e. g. C:\Users\user name\Dropbox\Asus WebStorage MySyncFolder).

yes.........

you see default when clicking attachment :

Open
Open with
Save to Download folder
Save as

I want :

Open
Open with
Save to Download folder
Save as
Save to C:\Users\user name\Dropbox\Asus WebStorage MySyncFolder
Save to " My other custom path "

Thank you very much.
Edmond.