Refer to two images below. Just loaded Thunderbird on a new laptop. It displays a list of messages with no headings, each message listing in two lines and acres of wasted space in the middle. See Image 1 (6300040). How do I get back to a list of one-line entries with headings at the top of each of the columns (which lets me change the sorting direction)? It works so much better for me. See Image 2 (6300039). Thanks in advance for your help. Long-term fan