> if I want to send HTML mail because it's more expressive and allows the client to rewrap emails to the width of the reader's screen? I’m almost certain thund

> if I want to send HTML mail because it's more expressive and allows the client to rewrap emails to the width of the reader's screen? I’m almost certain thunderbird soft wraps plaintext emails when composing rather than inserting actual line breaks for that reason. Besides, shorter lines are easier to read and parse; I’d take an 80 columns width text anytime over a 120+ cols, like more and more people tend to use.