I've looked through all of the questions and replies I can stand. I've looked at the responses regarding setting up the "Editor" function, no dice. Tried in vain to set up spellcheck, synonyms, etc., nothing. It won't even let me match my signature box to the font of the emails I send! Oh, and in the new outlook you can't stay in the tab you want to work with. I click on the message tab to try and fix my signature longform and the second I click off of where the cursor was when I selected the message tab, it jumps back to the home tab. There are so many bugs/issues with the new outlook that it negatively affects my ability to do my job. AI is more hype than useful and it's actually degraded the quality of so many products. Hence, the best fix for every problem in the new outlook has been to switch back to the old. That's been my experience. Take it or leave it.