diff --git a/overlay/src/app/components/AnimatedOutlet.tsx b/overlay/src/app/components/AnimatedOutlet.tsx
new file mode 100644
index 0000000..9ec9cf3
--- /dev/null
+++ b/overlay/src/app/components/AnimatedOutlet.tsx
@@ -0,0 +1,30 @@
+import React from 'react';
+import { Outlet, useLocation } from 'react-router-dom';
+import { MobileSwipeBackPanel } from './mobile/MobileSwipeBackPanel';
+
+/**
+ * Wrapper for Outlet that adds route-based animation
+ * Forces remount on route change by using location as key
+ */
+export function AnimatedOutlet() {
+  const location = useLocation();
+
+  return (
+    <MobileSwipeBackPanel>
+      <div
+        key={location.pathname}
+        data-route-transition="true"
+        style={{
+          flex: 1,
+          minWidth: 0,
+          minHeight: 0,
+          overflow: 'hidden',
+          display: 'flex',
+          flexDirection: 'column',
+        }}
+      >
+        <Outlet />
+      </div>
+    </MobileSwipeBackPanel>
+  );
+}
diff --git a/overlay/src/app/components/mobile/MobileSwipeBackPanel.tsx b/overlay/src/app/components/mobile/MobileSwipeBackPanel.tsx
new file mode 100644
index 0000000..6b5be49
--- /dev/null
+++ b/overlay/src/app/components/mobile/MobileSwipeBackPanel.tsx
@@ -0,0 +1,180 @@
+import React, { ReactNode, useCallback, useEffect, useRef, useState } from 'react';
+import { useCompactNav } from '../../hooks/useCompactNav';
+import { useBackRoute } from '../../hooks/useBackRoute';
+import * as css from './mobile-gestures.css';
+
+const COMMIT_RATIO = 0.28;
+const MIN_COMMIT_PX = 72;
+const MAX_START_Y_RATIO = 0.88;
+
+type DragState = {
+  pointerId: number;
+  startX: number;
+  startY: number;
+  dragging: boolean;
+  moved: boolean;
+};
+
+type MobileSwipeBackPanelProps = {
+  children: ReactNode;
+};
+
+export function MobileSwipeBackPanel({ children }: MobileSwipeBackPanelProps) {
+  const compact = useCompactNav();
+  const { canGoBack, goBack } = useBackRoute();
+  const enabled = compact && canGoBack;
+
+  const rootRef = useRef<HTMLDivElement>(null);
+  const contentRef = useRef<HTMLDivElement>(null);
+  const dragRef = useRef<DragState | null>(null);
+  const [offset, setOffset] = useState(0);
+  const [animating, setAnimating] = useState(false);
+
+  const resetTransform = useCallback((animate = true) => {
+    const content = contentRef.current;
+    if (!content) return;
+    setAnimating(animate);
+    setOffset(0);
+    content.style.transition = animate ? 'transform 0.22s cubic-bezier(0.4, 0, 0.2, 1)' : 'none';
+    content.style.transform = 'translateX(0px)';
+  }, []);
+
+  const setTransform = useCallback((px: number, animate = false) => {
+    const content = contentRef.current;
+    if (!content) return;
+    setOffset(px);
+    content.style.transition = animate
+      ? 'transform 0.22s cubic-bezier(0.4, 0, 0.2, 1)'
+      : 'none';
+    content.style.transform = `translateX(${px}px)`;
+  }, []);
+
+  const commitBack = useCallback(() => {
+    const width = rootRef.current?.clientWidth ?? window.innerWidth;
+    setAnimating(true);
+    setTransform(width, true);
+    window.setTimeout(() => {
+      goBack();
+      resetTransform(false);
+      setAnimating(false);
+    }, 180);
+  }, [goBack, resetTransform, setTransform]);
+
+  const shouldIgnoreTarget = (target: EventTarget | null): boolean => {
+    if (!(target instanceof Element)) return true;
+    return Boolean(
+      target.closest(
+        'input, textarea, [contenteditable="true"], [data-allow-text-selection="true"], button, a, [role="button"], [data-carousel-scroller], [data-disable-swipe-back="true"]'
+      )
+    );
+  };
+
+  const handlePointerDown = useCallback(
+    (evt: React.PointerEvent<HTMLDivElement>) => {
+      if (!enabled || animating || evt.button !== 0 || !evt.isPrimary) return;
+      if (shouldIgnoreTarget(evt.target)) return;
+      if (evt.clientY > window.innerHeight * MAX_START_Y_RATIO) return;
+
+      dragRef.current = {
+        pointerId: evt.pointerId,
+        startX: evt.clientX,
+        startY: evt.clientY,
+        dragging: true,
+        moved: false,
+      };
+
+      rootRef.current?.setPointerCapture(evt.pointerId);
+    },
+    [animating, enabled]
+  );
+
+  const handlePointerMove = useCallback(
+    (evt: React.PointerEvent<HTMLDivElement>) => {
+      const drag = dragRef.current;
+      if (!drag || !drag.dragging || drag.pointerId !== evt.pointerId) return;
+
+      const deltaX = evt.clientX - drag.startX;
+      const deltaY = evt.clientY - drag.startY;
+
+      if (!drag.moved) {
+        if (Math.abs(deltaX) < 8 && Math.abs(deltaY) < 8) return;
+        if (Math.abs(deltaY) > Math.abs(deltaX)) {
+          dragRef.current = null;
+          return;
+        }
+        if (deltaX <= 0) {
+          dragRef.current = null;
+          return;
+        }
+        drag.moved = true;
+      }
+
+      evt.preventDefault();
+      const width = rootRef.current?.clientWidth ?? window.innerWidth;
+      setTransform(Math.min(Math.max(deltaX, 0), width), false);
+    },
+    [setTransform]
+  );
+
+  const endDrag = useCallback(
+    (pointerId: number) => {
+      const drag = dragRef.current;
+      if (!drag || drag.pointerId !== pointerId) return;
+
+      if (rootRef.current?.hasPointerCapture(pointerId)) {
+        rootRef.current.releasePointerCapture(pointerId);
+      }
+
+      dragRef.current = null;
+
+      if (!drag.moved) {
+        resetTransform(false);
+        return;
+      }
+
+      const width = rootRef.current?.clientWidth ?? window.innerWidth;
+      const shouldCommit = offset >= Math.max(width * COMMIT_RATIO, MIN_COMMIT_PX);
+      if (shouldCommit) {
+        commitBack();
+        return;
+      }
+
+      resetTransform(true);
+    },
+    [commitBack, offset, resetTransform]
+  );
+
+  const handlePointerUp = useCallback(
+    (evt: React.PointerEvent<HTMLDivElement>) => {
+      endDrag(evt.pointerId);
+    },
+    [endDrag]
+  );
+
+  useEffect(() => {
+    resetTransform(false);
+  }, [enabled, resetTransform]);
+
+  if (!enabled) {
+    return <>{children}</>;
+  }
+
+  return (
+    <div
+      ref={rootRef}
+      className={css.SwipeBackRoot}
+      onPointerDown={handlePointerDown}
+      onPointerMove={handlePointerMove}
+      onPointerUp={handlePointerUp}
+      onPointerCancel={handlePointerUp}
+    >
+      <div className={css.SwipeBackUnderlay} aria-hidden>
+        <div className={css.SwipeBackSidebarPeek} />
+        <div className={css.SwipeBackChannelPeek} />
+      </div>
+      <div ref={contentRef} className={css.SwipeBackContent}>
+        {children}
+      </div>
+    </div>
+  );
+}
diff --git a/overlay/src/app/components/mobile/MobileSwipeToReplyLayer.tsx b/overlay/src/app/components/mobile/MobileSwipeToReplyLayer.tsx
new file mode 100644
index 0000000..cfaacdf
--- /dev/null
+++ b/overlay/src/app/components/mobile/MobileSwipeToReplyLayer.tsx
@@ -0,0 +1,217 @@
+import React, { ReactNode, useCallback, useEffect, useRef, useState } from 'react';
+import { Room } from 'matrix-js-sdk';
+import { Editor } from 'slate';
+import { useSetAtom } from 'jotai';
+import { Icon, Icons } from '../icons';
+import { useCompactNav } from '../../hooks/useCompactNav';
+import { roomIdToReplyDraftAtomFamily } from '../../state/room/roomInputDrafts';
+import { startReplyToEvent } from '../../features/room/replyToMessage';
+import * as css from './mobile-gestures.css';
+
+const SWIPE_THRESHOLD = 56;
+const MAX_SWIPE = 88;
+
+type DragState = {
+  pointerId: number;
+  startX: number;
+  startY: number;
+  messageEl: HTMLElement;
+  messageId: string;
+  moved: boolean;
+};
+
+type MobileSwipeToReplyLayerProps = {
+  room: Room;
+  editor: Editor;
+  children: ReactNode;
+};
+
+export function MobileSwipeToReplyLayer({ room, editor, children }: MobileSwipeToReplyLayerProps) {
+  const compact = useCompactNav();
+  const enabled = compact;
+  const setReplyDraft = useSetAtom(roomIdToReplyDraftAtomFamily(room.roomId));
+  const layerRef = useRef<HTMLDivElement>(null);
+  const dragRef = useRef<DragState | null>(null);
+  const [indicatorTop, setIndicatorTop] = useState<number | null>(null);
+  const [indicatorActive, setIndicatorActive] = useState(false);
+
+  const clearMessageTransform = useCallback((el?: HTMLElement | null, animate = true) => {
+    const target = el ?? dragRef.current?.messageEl;
+    if (!target) return;
+    target.style.transition = animate ? 'transform 0.18s cubic-bezier(0.4, 0, 0.2, 1)' : 'none';
+    target.style.transform = 'translateX(0px)';
+  }, []);
+
+  const resetGesture = useCallback(() => {
+    clearMessageTransform();
+    dragRef.current = null;
+    setIndicatorTop(null);
+    setIndicatorActive(false);
+  }, [clearMessageTransform]);
+
+  const shouldIgnoreTarget = (target: EventTarget | null): boolean => {
+    if (!(target instanceof Element)) return true;
+    if (
+      target.closest(
+        'input, textarea, [contenteditable="true"], [data-allow-text-selection="true"], button, a, [role="button"], [data-disable-swipe-reply="true"]'
+      )
+    ) {
+      return true;
+    }
+
+    let el: Element | null = target;
+    while (el && layerRef.current?.contains(el)) {
+      if (el instanceof HTMLElement) {
+        const { overflowX } = window.getComputedStyle(el);
+        if (
+          (overflowX === 'auto' || overflowX === 'scroll') &&
+          el.scrollWidth > el.clientWidth + 8
+        ) {
+          return true;
+        }
+      }
+      el = el.parentElement;
+    }
+
+    return false;
+  };
+
+  const findMessageElement = (target: EventTarget | null): HTMLElement | null => {
+    if (!(target instanceof Element)) return null;
+    return target.closest('[data-message-id]') as HTMLElement | null;
+  };
+
+  const updateIndicator = useCallback((messageEl: HTMLElement, offset: number) => {
+    const layer = layerRef.current;
+    if (!layer) return;
+    const messageRect = messageEl.getBoundingClientRect();
+    const layerRect = layer.getBoundingClientRect();
+    setIndicatorTop(messageRect.top - layerRect.top + messageRect.height / 2 - 18);
+    setIndicatorActive(Math.abs(offset) >= SWIPE_THRESHOLD * 0.65);
+  }, []);
+
+  const handlePointerDown = useCallback(
+    (evt: React.PointerEvent<HTMLDivElement>) => {
+      if (!enabled || evt.button !== 0 || !evt.isPrimary) return;
+      if (shouldIgnoreTarget(evt.target)) return;
+
+      const messageEl = findMessageElement(evt.target);
+      const messageId = messageEl?.getAttribute('data-message-id');
+      if (!messageEl || !messageId) return;
+
+      dragRef.current = {
+        pointerId: evt.pointerId,
+        startX: evt.clientX,
+        startY: evt.clientY,
+        messageEl,
+        messageId,
+        moved: false,
+      };
+
+      layerRef.current?.setPointerCapture(evt.pointerId);
+    },
+    [enabled]
+  );
+
+  const handlePointerMove = useCallback(
+    (evt: React.PointerEvent<HTMLDivElement>) => {
+      const drag = dragRef.current;
+      if (!drag || drag.pointerId !== evt.pointerId) return;
+
+      const deltaX = evt.clientX - drag.startX;
+      const deltaY = evt.clientY - drag.startY;
+
+      if (!drag.moved) {
+        if (Math.abs(deltaX) < 8 && Math.abs(deltaY) < 8) return;
+        if (Math.abs(deltaY) > Math.abs(deltaX)) {
+          resetGesture();
+          return;
+        }
+        if (deltaX >= 0) {
+          resetGesture();
+          return;
+        }
+        drag.moved = true;
+      }
+
+      evt.preventDefault();
+      const offset = Math.max(deltaX, -MAX_SWIPE);
+      drag.messageEl.style.transition = 'none';
+      drag.messageEl.style.transform = `translateX(${offset}px)`;
+      updateIndicator(drag.messageEl, offset);
+    },
+    [resetGesture, updateIndicator]
+  );
+
+  const endDrag = useCallback(
+    (pointerId: number) => {
+      const drag = dragRef.current;
+      if (!drag || drag.pointerId !== pointerId) return;
+
+      if (layerRef.current?.hasPointerCapture(pointerId)) {
+        layerRef.current.releasePointerCapture(pointerId);
+      }
+
+      const { messageEl, messageId, moved } = drag;
+      dragRef.current = null;
+
+      if (!moved) {
+        resetGesture();
+        return;
+      }
+
+      const matrix = window.getComputedStyle(messageEl).transform;
+      const offset =
+        matrix && matrix !== 'none'
+          ? Number(new DOMMatrix(matrix).m41)
+          : 0;
+
+      const shouldReply = Math.abs(offset) >= SWIPE_THRESHOLD;
+      clearMessageTransform(messageEl, true);
+      setIndicatorTop(null);
+      setIndicatorActive(false);
+
+      if (shouldReply) {
+        startReplyToEvent(room, messageId, setReplyDraft, editor);
+      }
+    },
+    [clearMessageTransform, editor, resetGesture, room, setReplyDraft]
+  );
+
+  const handlePointerUp = useCallback(
+    (evt: React.PointerEvent<HTMLDivElement>) => {
+      endDrag(evt.pointerId);
+    },
+    [endDrag]
+  );
+
+  useEffect(() => resetGesture, [room.roomId, resetGesture]);
+
+  if (!enabled) {
+    return <>{children}</>;
+  }
+
+  return (
+    <div
+      ref={layerRef}
+      className={css.SwipeToReplyLayer}
+      onPointerDown={handlePointerDown}
+      onPointerMove={handlePointerMove}
+      onPointerUp={handlePointerUp}
+      onPointerCancel={handlePointerUp}
+    >
+      {children}
+      {indicatorTop !== null && (
+        <div
+          className={`${css.SwipeToReplyIndicator} ${
+            indicatorActive ? css.SwipeToReplyIndicatorActive : ''
+          }`}
+          style={{ top: indicatorTop }}
+          aria-hidden
+        >
+          <Icon src={Icons.ReplyArrow} size="200" />
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/overlay/src/app/components/mobile/mobile-gestures.css.ts b/overlay/src/app/components/mobile/mobile-gestures.css.ts
new file mode 100644
index 0000000..a5eb552
--- /dev/null
+++ b/overlay/src/app/components/mobile/mobile-gestures.css.ts
@@ -0,0 +1,78 @@
+import { style } from '@vanilla-extract/css';
+import { color, config, toRem } from 'folds';
+
+export const SwipeBackRoot = style({
+  position: 'relative',
+  flex: 1,
+  minWidth: 0,
+  minHeight: 0,
+  overflow: 'hidden',
+  display: 'flex',
+  flexDirection: 'column',
+});
+
+export const SwipeBackUnderlay = style({
+  position: 'absolute',
+  inset: 0,
+  display: 'flex',
+  pointerEvents: 'none',
+  zIndex: 0,
+});
+
+export const SwipeBackSidebarPeek = style({
+  width: toRem(66),
+  flexShrink: 0,
+  backgroundColor: color.Background.Container,
+  borderRight: `${config.borderWidth.B300} solid ${color.Background.ContainerLine}`,
+});
+
+export const SwipeBackChannelPeek = style({
+  flex: 1,
+  minWidth: 0,
+  backgroundColor: color.Background.Container,
+});
+
+export const SwipeBackContent = style({
+  position: 'relative',
+  zIndex: 1,
+  flex: 1,
+  minWidth: 0,
+  minHeight: 0,
+  display: 'flex',
+  flexDirection: 'column',
+  backgroundColor: color.Background.Container,
+  boxShadow: '0 0 24px rgba(0, 0, 0, 0.35)',
+  willChange: 'transform',
+});
+
+export const SwipeToReplyLayer = style({
+  position: 'relative',
+  flex: 1,
+  minHeight: 0,
+  display: 'flex',
+  flexDirection: 'column',
+  touchAction: 'pan-y',
+});
+
+export const SwipeToReplyIndicator = style({
+  position: 'absolute',
+  right: config.space.S300,
+  display: 'flex',
+  alignItems: 'center',
+  justifyContent: 'center',
+  width: toRem(36),
+  height: toRem(36),
+  borderRadius: config.radii.Pill,
+  backgroundColor: color.Primary.Container,
+  color: color.Primary.OnContainer,
+  pointerEvents: 'none',
+  zIndex: 2,
+  opacity: 0,
+  transform: 'scale(0.85)',
+  transition: 'opacity 0.12s ease, transform 0.12s ease',
+});
+
+export const SwipeToReplyIndicatorActive = style({
+  opacity: 1,
+  transform: 'scale(1)',
+});
diff --git a/overlay/src/app/features/room/RoomView.tsx b/overlay/src/app/features/room/RoomView.tsx
new file mode 100644
index 0000000..47e478d
--- /dev/null
+++ b/overlay/src/app/features/room/RoomView.tsx
@@ -0,0 +1,160 @@
+import React, { useCallback, useRef } from 'react';
+import { Box, Text, config } from 'folds';
+import { EventType, Room } from 'matrix-js-sdk';
+import { ReactEditor } from 'slate-react';
+import { isKeyHotkey } from 'is-hotkey';
+import { useAtomValue } from 'jotai';
+import { useStateEvent } from '../../hooks/useStateEvent';
+import { StateEvent } from '../../../types/matrix/room';
+import { usePowerLevelsContext } from '../../hooks/usePowerLevels';
+import { useMatrixClient } from '../../hooks/useMatrixClient';
+import { useEditor } from '../../components/editor';
+import { RoomInputPlaceholder } from './RoomInputPlaceholder';
+import { RoomTimeline } from './RoomTimeline';
+import { RoomViewTyping } from './RoomViewTyping';
+import { RoomTombstone } from './RoomTombstone';
+import { RoomInput } from './RoomInput';
+import { RoomViewFollowing, RoomViewFollowingPlaceholder } from './RoomViewFollowing';
+import { Page } from '../../components/page';
+import { RoomViewHeader } from './RoomViewHeader';
+import { useKeyDown } from '../../hooks/useKeyDown';
+import { editableActiveElement } from '../../utils/dom';
+import { settingsAtom } from '../../state/settings';
+import { useSetting } from '../../state/hooks/settings';
+import { useRoomPermissions } from '../../hooks/useRoomPermissions';
+import { useRoomCreators } from '../../hooks/useRoomCreators';
+import { activeThreadIdAtomFamily } from '../../state/activeThread';
+import { ThreadView } from './ThreadView';
+import { MobileSwipeToReplyLayer } from '../../components/mobile/MobileSwipeToReplyLayer';
+
+const FN_KEYS_REGEX = /^F\d+$/;
+const shouldFocusMessageField = (evt: KeyboardEvent): boolean => {
+  const { code } = evt;
+  if (evt.metaKey || evt.altKey || evt.ctrlKey) {
+    return false;
+  }
+
+  if (FN_KEYS_REGEX.test(code)) return false;
+
+  if (
+    code.startsWith('OS') ||
+    code.startsWith('Meta') ||
+    code.startsWith('Shift') ||
+    code.startsWith('Alt') ||
+    code.startsWith('Control') ||
+    code.startsWith('Arrow') ||
+    code.startsWith('Page') ||
+    code.startsWith('End') ||
+    code.startsWith('Home') ||
+    code === 'Tab' ||
+    code === 'Space' ||
+    code === 'Enter' ||
+    code === 'NumLock' ||
+    code === 'ScrollLock'
+  ) {
+    return false;
+  }
+
+  return true;
+};
+
+export function RoomView({ room, eventId }: { room: Room; eventId?: string }) {
+  const roomInputRef = useRef<HTMLDivElement>(null);
+  const roomViewRef = useRef<HTMLDivElement>(null);
+
+  const [hideActivity] = useSetting(settingsAtom, 'hideActivity');
+
+  const { roomId } = room;
+  const editor = useEditor();
+
+  const mx = useMatrixClient();
+
+  const tombstoneEvent = useStateEvent(room, StateEvent.RoomTombstone);
+  const powerLevels = usePowerLevelsContext();
+  const creators = useRoomCreators(room);
+
+  const permissions = useRoomPermissions(creators, powerLevels);
+  const canMessage = permissions.event(EventType.RoomMessage, mx.getSafeUserId());
+
+  const activeThreadId = useAtomValue(activeThreadIdAtomFamily(roomId));
+
+  useKeyDown(
+    window,
+    useCallback(
+      (evt) => {
+        if (editableActiveElement()) return;
+        const portalContainer = document.getElementById('portalContainer');
+        if (portalContainer && portalContainer.children.length > 0) {
+          return;
+        }
+        if (shouldFocusMessageField(evt)) {
+          evt.preventDefault();
+          ReactEditor.focus(editor);
+          if (evt.key.length === 1) {
+            editor.insertText(evt.key);
+          }
+        } else if (isKeyHotkey('mod+v', evt)) {
+          ReactEditor.focus(editor);
+        }
+      },
+      [editor]
+    )
+  );
+
+  return (
+    <Page ref={roomViewRef}>
+      <RoomViewHeader />
+      {activeThreadId ? (
+        <ThreadView room={room} threadRootId={activeThreadId} />
+      ) : (
+        <>
+          <MobileSwipeToReplyLayer room={room} editor={editor}>
+            <Box grow="Yes" direction="Column">
+              <RoomTimeline
+                key={roomId}
+                room={room}
+                eventId={eventId}
+                roomInputRef={roomInputRef}
+                editor={editor}
+              />
+              <RoomViewTyping room={room} />
+            </Box>
+          </MobileSwipeToReplyLayer>
+          <Box shrink="No" direction="Column" data-disable-swipe-back="true">
+            <div style={{ padding: `0 ${config.space.S400}` }}>
+              {tombstoneEvent ? (
+                <RoomTombstone
+                  roomId={roomId}
+                  body={tombstoneEvent.getContent().body}
+                  replacementRoomId={tombstoneEvent.getContent().replacement_room}
+                />
+              ) : (
+                <>
+                  {canMessage && (
+                    <RoomInput
+                      room={room}
+                      editor={editor}
+                      roomId={roomId}
+                      fileDropContainerRef={roomViewRef}
+                      ref={roomInputRef}
+                    />
+                  )}
+                  {!canMessage && (
+                    <RoomInputPlaceholder
+                      style={{ padding: config.space.S200 }}
+                      alignItems="Center"
+                      justifyContent="Center"
+                    >
+                      <Text align="Center">You do not have permission to post in this room</Text>
+                    </RoomInputPlaceholder>
+                  )}
+                </>
+              )}
+            </div>
+            {hideActivity ? <RoomViewFollowingPlaceholder /> : <RoomViewFollowing room={room} />}
+          </Box>
+        </>
+      )}
+    </Page>
+  );
+}
diff --git a/overlay/src/app/features/room/replyToMessage.ts b/overlay/src/app/features/room/replyToMessage.ts
new file mode 100644
index 0000000..4ec300b
--- /dev/null
+++ b/overlay/src/app/features/room/replyToMessage.ts
@@ -0,0 +1,41 @@
+import { RelationType, Room } from 'matrix-js-sdk';
+import { Editor } from 'slate';
+import { ReactEditor } from 'slate-react';
+import { getEditedEvent } from '../../utils/room';
+import { IReplyDraft } from '../../state/room/roomInputDrafts';
+
+export const startReplyToEvent = (
+  room: Room,
+  eventId: string,
+  setReplyDraft: (draft: IReplyDraft | undefined) => void,
+  editor?: Editor,
+  startThread = false
+): boolean => {
+  const replyEvt = room.findEventById(eventId);
+  if (!replyEvt || replyEvt.isRedacted()) return false;
+
+  const editedReply = getEditedEvent(eventId, replyEvt, room.getUnfilteredTimelineSet());
+  const content = editedReply?.getContent()['m.new_content'] ?? replyEvt.getContent();
+  const { body, formatted_body: formattedBody } = content;
+  const senderId = replyEvt.getSender();
+
+  if (!senderId || typeof body !== 'string') return false;
+
+  const relation = startThread
+    ? { rel_type: RelationType.Thread, event_id: eventId }
+    : replyEvt.getWireContent()['m.relates_to'];
+
+  setReplyDraft({
+    userId: senderId,
+    eventId,
+    body,
+    formattedBody,
+    relation,
+  });
+
+  if (editor) {
+    setTimeout(() => ReactEditor.focus(editor), 100);
+  }
+
+  return true;
+};