“The most valuable of all talents is that of never using two words when one will do.” ~Thomas Jefferson
Brevity. That’s one, important, word. Better to write a short, thorough email, than to overwhelm with info no-one will ever read (something a few folks in Redmond have yet to appreciate, perhaps). As Blaise Pascal noted, it takes longer to create a short letter than to write a long one.
If, however, you find you do need to write lenghty emails, especially ones with lots of information, you might find it worthwhile looking into Bookmarks. Just like in long documents in Word, it’s possible to create reference points within an email, then provide links to jump directly to those places.
brevity | join & leave | history
Simply select the text you want to link from, go to Insert | Hyperlink and instead of linking to a URL, choose the “Place in this Document” option, then pick the appropriate bookmark.