In long email chains, Thunderbird indents the earlier email and adds a vertical colored line on the left side. In long email chains, the earliest emails get pushed way off to the right and colored lines keep accumulating as shown in the attached image. This continuously indented formatting and color vertical lines makes it harder to read and if printing, it wastes paper.
Would be good to have options to: 1) not indent earlier emails, and 2) use a horizontal line to separate each mail in the chain.
Thanks.