Once you’ve selected a message from the Message List, you’ll see it displayed in the Preview Pane on the right half of the screen. Most importantly, this displays the contents of the message. You can learn more about the message, or perform actions on it, by clicking the sender name, the “Details” link, or other buttons in the top row.
Preview Pane displaying a flagged message with a PDF attachment.
For some messages, you may see "cards" containing useful information like a map associated with the message, or a handy unsubscribe button. Attachments also appear in the row of cards.
The Preview Pane also lists "tags" assigned automatically by Inky. For example, message from people you know will be tagged #contact, while mailing list messages will be tagged #subscription and often #unsubscribe.
Close-up of message tags and cards in the Preview Pane.
Tags form the basis for many of the built-in mailboxes, plus you can create your own custom tags to organize mail however you want.