Semagic can work with Blogspot, but you can't use it with Blogspot AND LiveJournal, by the looks of it. I barely post to LJ anymore, but I don't want to lose the ability to through Semagic so I've been posting to my Blogspot via e-mail.

The formatting's better with Outlook Express, if you can believe it, than with Gmail, but it's hard to embed photos or video. I have to go back and edit posts to do that, and add tags. Just something to consider.