Hi! Yes, I know that Sitejet is able to transfer projects between accounts, but this is a manual method through support.
This non-official way allows us to share small block/parts (headers, menus, content groups, sections and so on… even entire pages) without going through support.
P.S. For entire websites I’ve opened a feature request to share templates (so we don’t have to go through support). This way, we can enable anyone from the community to create website templates.
Sure, what project are you interested?