In order to get Evolution to do this correctly, you may need to check the Apply filters to new messages in Inbox on this server option, which lives in Tools / Settings / Edit Account / Receiving Options.
Evolution 1.4 (and maybe some earlier versions) lets you create new Email by saying something like
evolution mailto:username@localhost
You can also add an attachment or subject -- though it isn't documented anywhere sensible, like in the User Guide, or in the (non-existent) ManPage.
evolution 'mailto:username@localhost?subject=moo&attach=file:///tmp/x.txt'
One page links to EvolutionNotes:
lib/main.php:944: Notice: PageInfo: Cannot find action page