[C] + {idcard} + {idother} + [C] @ boards.trello.com
systems+wvol537ivxvxxxxxx+2aupc2pxxxxx+0k33dt7xx@boards.trello.com
@Sistemas IM nope there's no way to programmatically produce or access the email-to-card or email-to-board settings.
If you want closer email integration and you're using Gmail you could check out my BenkoBoard product:
https://trello.com/integrations/#benkoboard
Or for shared email (and usable with Office365 by forwarding) BenkoDesk:
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