Mail.app: Send file in 5 seconds. This script minimizes the current message, waits for five seconds, and then opens the message and sends the mail out. If you unminimize the app, then the mail is also cancelled.

Delay Send.applescript

on run {input, parameters}
	tell application "Mail"
		set theWindow to front window
		set miniaturized of theWindow to true
	end tell
	
	set question to display dialog "Sending Mail" buttons {"Send Now", "Stop"} default button 2 giving up after 12
	set answer to button returned of question
	
	tell application "System Events"
		set currentApplication to name of the first process whose frontmost is true
	end tell
	
	tell application "Mail"
		activate
		set stillMinimized to miniaturized of theWindow
		set notCancelled to answer is not equal to "Stop"
		activate theWindow
		set miniaturized of theWindow to false
	end tell
	
	if stillMinimized and notCancelled then
		tell application "System Events"
			tell process "Mail"
				keystroke "d" using {command down, shift down}
			end tell
		end tell
	end if
	
	tell application currentApplication to activate
end run