Hook With Missive Email Client App?

thanks for asking, @splitpersonality. And seconding, @jonur.

How about the following Hook > Preferences > Scripts > Missive> “Get Address” script :

set the clipboard to ""

set theUrl to ""
tell application "System Events"
	
	keystroke "c" using {command down}
	delay 0.3
	repeat 20 times -- poll clipboard for ~2 seconds. Sometimes set x to the clipboard throws exception
		try
			set theUrl to the clipboard
			if theUrl is not equal to "" then
				exit repeat
			end if
		end try
		delay 0.1
	end repeat
	
	if length of theUrl is greater than 27 then
		
		set theUrl to text 6 thru -1 of theUrl
		set theUrl to "missive" & theUrl
	end if
	
	tell process "Missive"
		set menu_item_name to name of last menu item of menu "Window" of menu bar 1
		set AppleScript's text item delimiters to " - "
		set theTitle to item 1 of (text items of menu_item_name)
		return "[" & theTitle & "](" & theUrl & ")"
	end tell
end tell