Feature #5622 added support to allow the target_version (fixed_version in the implementation) to be set in the contents on an incoming email; this is a useful addition.

It would be really useful to also allow a default version to be set on the command line (for new tickets) when calling @receive_pop3@ or @receive_imap@. This would be really useful in cases where you want all new tickets to be added to a version such as 'Unassigned Backlog", "For Review", etc...

This is a very minor change to redmine/lib/tasks/email.rake to add @fixed_version@ to the list of attributes that can be set for both :receive_pop3 and :receive_imap, and add a relevant description to the command line help. e.g. replace @%w(project status tracker category priority).each { |a| options[:issue][a.to_sym] = ENV[a] if ENV[a] }
with %w(project status tracker category priority fixed_version).each { |a| options[:issue][a.to_sym] = ENV[a] if ENV[a] }@