Claws Mail does not cooperate with devil's pie. When Claws Mail is launched it gets moved according to devil's pie's instructions but moves back to the focused workspace, making devil's pie's instructions useless. I tested it with devil's pie 0.16 and 0.20.2 without any success. My devil's pie configuration file with the name claws.ds in ~/.devilspie/ for version 0.16 appears as follows: (if (is (application_name) "claws-mail") (set_workspace 2)) It would be great if that could be fixed. :-) Thanks for the great software.
-- Bugzilla database cleanup -- Hi, It looks like nobody has been interested in implementing this feature since the end of 2007; in order to clean up the bugzilla, I'm marking this WONTFIX. Features in Claws Mail get implemented on a developer-interest basis: if one of the core developers codes a feature, or if an external contributor provides a good patch, the feature gets added. If the feature interests nobody with coding abilities, although it seems nicer to leave old requests lingering in Bugzilla and let the submitter hope the feature will be added someday, it's more honest (and cleaner) to close them as WONTFIX.
Could not reproduce w/ devilspie 0.22 and CM 3.9.x here (CentOS6), it definitely works.