codebykat/wp-post-by-email — pull request #2 by barryceelen (2013-09-10 22:02:50+00:00)
Title: Sets $post_author to 0 in stead of 1 if no author found

The user is set to 1 when a user with a corresponding $from_email is not found. Setting it to 0 prevents a php notice when calling wp_dropdown_users(), eg. in the 'Author' meta box.