It would be advisable for the content of the event to appear as a graphic space on the Today Panel without the need to click on it; in this way, by opening Thunderbird, with a 1-day view , its content would be immediately visible to the user (the description of the event, a comment, an image, a phrase, a drawing, a thought, as if it were the page of your personal diary). In short, beyond the e-mail panel, the page of one's diary would be open, where one could leave notes.