Message threads

Reply to any message in its own side thread, Slack-style. Built in while threadsEnabled is on.

Overview

Where	What the user sees
Message toolbar	Reply in thread opens the ThreadDrawer for that message
Under the parent message	Reply count, reply avatars and “last reply” time - click to open the thread
Thread composer	The same composer as the chat, plus Also send to conversation
Your replies	Sent / delivered / read ticks, updated live as others read the thread
Thread header	Typing indicator (“X is typing…”) and a mute bell for this thread only
Sidebar (optional)	Threads inbox - every thread you're in, with unread replies

Files can be dragged onto the thread panel, the same as the main chat.

A reply turns read once every other member of the conversation has read the thread past it, and delivered once someone has read it or been online since it was sent. So in a group, one member opening the thread shows delivered, not read.

Threads inbox

Off by default - turn it on with the layout prop:

tsx

<ChatMain {...props} layout={{ threadsInbox: true }} />

Customize & limits

Replace the UI with the ThreadDrawer / ThreadsInboxDialog slots, or restyle with classNames.threadsInboxTrigger / threadsInboxDialog. Limits come from the admin settings: maxRepliesPerThread, and the messageTimers edit/delete windows also apply to replies - see Admin permissions.

Exports

Export	Purpose
ThreadDrawer, ThreadsInboxDialog	Default components (wrap them in your own slots)
apiGetThread({ rootId }), apiListThreads({ conversationId? })	REST - one thread with replies / the inbox list
buildThreadReplySummaries, collectThreadReplies	Build reply summaries from loaded messages
formatReplyCount, formatLastReplyLabel	“3 replies” / “Last reply 2h ago” labels
ThreadMembership, ThreadInboxItem, ThreadReplySummary	Types