39

With the old compose format, there is a section to edit the subject line. However, I'm not seeing this with the new compose window - am I missing something?

old vs new compose

43

Click the down arrow next to the reply arrow (upper left corner). That'll give you the option to (additionally) Forward, Reply all (not pictured), or Edit subject.

screen shot

Not the answer you're looking for? Browse other questions tagged or ask your own question.