You can use Trllo for this as well. Each board has an associated email which converts any messages sent to it into a card. I've created a hotkey for my email c

You can use Trllo for this as well. Each board has an associated email which converts any messages sent to it into a card. I've created a hotkey for my email client so any email that may require an action can easily be added to the Inbox list on my GTD Trello board. It works really well as long as I am maintaining it.