Don't add link previews after I hit send.
I typed an e-mail with three links pasted in. For the second and third, once I pasted them in, Outlook automatically added a "link preview" rectangle with the page title, image, and some text scraped from the page. I deleted these both. Then I hit send. After hitting send the first link showed a similar preview section that had been auto-added. "I must have missed that," I thought, and hit undo to cancel send. But it didn't show any preview at all in draft mode. So I hit send again and it was back. Not sure if it's not rendering in the compose view or if it's somehow being scraped & added after I hit send, but it was not wanted either way.