formattedText property

Contains the message text with markups added to communicate formatting.

This field might not capture all formatting visible in the UI, but includes the following: * Markup syntax for bold, italic, strikethrough, monospace, monospace block, and bulleted list. * User mentions using the format . * Custom hyperlinks using the format `<{url}|{rendered_text}>` where the first string is the URL and the second is the rendered text—for example, . * Custom emoji using the format :{emoji_name}:—for example, :smile:. This doesn't apply to Unicode emoji, such as U+1F600 for a grinning face emoji. For more information, see View text formatting sent in a message

Output only.