This is great, the next feature I'd love to see would be a way to update existing cards via email. The use case: I create a card by forwarding an email to my trello email address. In the meantime, the email thread continues and I have a few more updates on it. Now I want to update the Trello card with the updates from that email thread. If I just forward that email to Trello, it is now creating another new card instead of updating the existing card. Would others find this feature as useful as I would?