Postbox displays messages in the Thread Pane by conversation. Each conversation is comprised of a Summary Row, with individual message threads displayed below.

When the Summary Row is selected, Postbox displays messages as a single, chronological conversation.

Conversation views enable you to keep your summary rows collapsed, thus allowing more unique messages to be visible at one time!

By default Postbox will display all messages related to the current conversation from all folders, such as the Inbox, Sent, and Archive folder. To only display messages from the current folder, select Options... from the Tools menu, click the Display icon and then the Conversations tab, and then select the Only from the current folder radio button. Within the message header, you can also click the Show All button to gather and expand all messages within a conversation.

To change the chronological order from newest to oldest first, select Options... from the Tools menu, click the Display icon and then the Conversations tab, and then select the Oldest messages first radio button.

Each message has a blue or white/grey header. Clicking on some empty space within this header will expand or collapse its contents. Clicking on "show details" will expand the header to reveal additional information and message actions, such as Reply or Forward.

To display or hide profile icons within the conversation header, select Options... from the Tools menu, click the Display icon and then the Conversations tab, and then select the checkbox for Include contact photos for each participant in the conversation.

Within a message body, clicking on "- show quoted text -" will expand the message to include all quoted text, but in many cases, the text will already be summarized under its corresponding conversation header.