If this is set, do not add the From: address to the cc: list, if it
shows up in a From: line.
Default is the value of 'sendemail.suppressfrom' configuration value;
- if that is unspecified, default to --no-supress-from.
+ if that is unspecified, default to --no-suppress-from.
--thread, --no-thread::
If this is set, the In-Reply-To header will be set on each email sent.