Is there any app that you know of with which I am able to 'pin' stickies to certain fields within an application window? In this instance, I am inquiring as to whether or not I am able to find an application with which I am able to write notes attached to emails that I am unable to sort at this time, but that I am able to attach memos to so that it stays fresh in my mind and does not fall under the rug, so to speak.
I use the OSX native Mail application.
Similar to flagging messages, except with notes.