"And, throughout the program, the designers have tried to
simplify things, so you don't have to be an engineer to use it. One
example, which is a catch-up feature, is an account set-up wizard
that spares you from knowing the names of servers.
"But there are still too many issues for me. Thunderbird can't
be set to automatically show a CC or BCC line in a new email you're
composing. Every new address you add is set as a "To" address, and
you must click on a drop-down menu to change it to CC or
BCC—an extra step that becomes tedious quickly."