diff --git a/app/javascript/mastodon/actions/compose.js b/app/javascript/mastodon/actions/compose.js
index 2d4f48c20..232c4b1c1 100644
--- a/app/javascript/mastodon/actions/compose.js
+++ b/app/javascript/mastodon/actions/compose.js
@@ -56,7 +56,6 @@ export const COMPOSE_UNMOUNT = 'COMPOSE_UNMOUNT';
 export const COMPOSE_SENSITIVITY_CHANGE  = 'COMPOSE_SENSITIVITY_CHANGE';
 export const COMPOSE_SPOILERNESS_CHANGE  = 'COMPOSE_SPOILERNESS_CHANGE';
 export const COMPOSE_SPOILER_TEXT_CHANGE = 'COMPOSE_SPOILER_TEXT_CHANGE';
-export const COMPOSE_VISIBILITY_CHANGE   = 'COMPOSE_VISIBILITY_CHANGE';
 export const COMPOSE_COMPOSING_CHANGE    = 'COMPOSE_COMPOSING_CHANGE';
 export const COMPOSE_LANGUAGE_CHANGE     = 'COMPOSE_LANGUAGE_CHANGE';
 
@@ -794,13 +793,6 @@ export function changeComposeSpoilerText(text) {
   };
 }
 
-export function changeComposeVisibility(value) {
-  return {
-    type: COMPOSE_VISIBILITY_CHANGE,
-    value,
-  };
-}
-
 export function insertEmojiCompose(position, emoji, needsSpace) {
   return {
     type: COMPOSE_EMOJI_INSERT,
diff --git a/app/javascript/mastodon/actions/compose_typed.ts b/app/javascript/mastodon/actions/compose_typed.ts
index 808830602..03a973ec0 100644
--- a/app/javascript/mastodon/actions/compose_typed.ts
+++ b/app/javascript/mastodon/actions/compose_typed.ts
@@ -13,10 +13,10 @@ import {
 } from 'mastodon/store/typed_functions';
 
 import type { ApiQuotePolicy } from '../api_types/quotes';
-import type { Status } from '../models/status';
+import type { Status, StatusVisibility } from '../models/status';
 
 import { showAlert } from './alerts';
-import { focusCompose } from './compose';
+import { changeCompose, focusCompose } from './compose';
 import { importFetchedStatuses } from './importer';
 import { openModal } from './modal';
 
@@ -67,6 +67,39 @@ const simulateModifiedApiResponse = (
   return data;
 };
 
+export const changeComposeVisibility = createAppThunk(
+  'compose/visibility_change',
+  (visibility: StatusVisibility, { dispatch, getState }) => {
+    if (visibility !== 'direct') {
+      return visibility;
+    }
+
+    const state = getState();
+    const quotedStatusId = state.compose.get('quoted_status_id') as
+      | string
+      | null;
+    if (!quotedStatusId) {
+      return visibility;
+    }
+
+    // Remove the quoted status
+    dispatch(quoteComposeCancel());
+    const quotedStatus = state.statuses.get(quotedStatusId) as Status | null;
+    if (!quotedStatus) {
+      return visibility;
+    }
+
+    // Append the quoted status URL to the compose text
+    const url = quotedStatus.get('url') as string;
+    const text = state.compose.get('text') as string;
+    if (!text.includes(url)) {
+      const newText = text.trim() ? `${text}\n\n${url}` : url;
+      dispatch(changeCompose(newText));
+    }
+    return visibility;
+  },
+);
+
 export const changeUploadCompose = createDataLoadingThunk(
   'compose/changeUpload',
   async (
diff --git a/app/javascript/mastodon/features/compose/components/compose_form.jsx b/app/javascript/mastodon/features/compose/components/compose_form.jsx
index 299de12e7..770f77604 100644
--- a/app/javascript/mastodon/features/compose/components/compose_form.jsx
+++ b/app/javascript/mastodon/features/compose/components/compose_form.jsx
@@ -140,7 +140,10 @@ class ComposeForm extends ImmutablePureComponent {
       return;
     }
 
-    this.props.onSubmit(missingAltTextModal && this.props.missingAltText && this.props.privacy !== 'direct');
+    this.props.onSubmit({
+      missingAltText: missingAltTextModal && this.props.missingAltText && this.props.privacy !== 'direct',
+      quoteToPrivate: this.props.quoteToPrivate,
+    });
 
     if (e) {
       e.preventDefault();
diff --git a/app/javascript/mastodon/features/compose/components/visibility_button.tsx b/app/javascript/mastodon/features/compose/components/visibility_button.tsx
index 1ea504ab1..d93940502 100644
--- a/app/javascript/mastodon/features/compose/components/visibility_button.tsx
+++ b/app/javascript/mastodon/features/compose/components/visibility_button.tsx
@@ -5,8 +5,10 @@ import { defineMessages, useIntl } from 'react-intl';
 
 import classNames from 'classnames';
 
-import { changeComposeVisibility } from '@/mastodon/actions/compose';
-import { setComposeQuotePolicy } from '@/mastodon/actions/compose_typed';
+import {
+  changeComposeVisibility,
+  setComposeQuotePolicy,
+} from '@/mastodon/actions/compose_typed';
 import { openModal } from '@/mastodon/actions/modal';
 import type { ApiQuotePolicy } from '@/mastodon/api_types/quotes';
 import type { StatusVisibility } from '@/mastodon/api_types/statuses';
diff --git a/app/javascript/mastodon/features/compose/containers/compose_form_container.js b/app/javascript/mastodon/features/compose/containers/compose_form_container.js
index 3dad46bc5..15b1c7cc4 100644
--- a/app/javascript/mastodon/features/compose/containers/compose_form_container.js
+++ b/app/javascript/mastodon/features/compose/containers/compose_form_container.js
@@ -12,6 +12,7 @@ import {
 } from 'mastodon/actions/compose';
 import { pasteLinkCompose } from 'mastodon/actions/compose_typed';
 import { openModal } from 'mastodon/actions/modal';
+import { PRIVATE_QUOTE_MODAL_ID } from 'mastodon/features/ui/components/confirmation_modals/private_quote_notify';
 
 import ComposeForm from '../components/compose_form';
 
@@ -32,6 +33,10 @@ const mapStateToProps = state => ({
   isUploading: state.getIn(['compose', 'is_uploading']),
   anyMedia: state.getIn(['compose', 'media_attachments']).size > 0,
   missingAltText: state.getIn(['compose', 'media_attachments']).some(media => ['image', 'gifv'].includes(media.get('type')) && (media.get('description') ?? '').length === 0),
+  quoteToPrivate:
+    !!state.getIn(['compose', 'quoted_status_id'])
+    && state.getIn(['compose', 'privacy']) === 'private'
+    && !state.getIn(['settings', 'dismissed_banners', PRIVATE_QUOTE_MODAL_ID]),
   isInReply: state.getIn(['compose', 'in_reply_to']) !== null,
   lang: state.getIn(['compose', 'language']),
   maxChars: state.getIn(['server', 'server', 'configuration', 'statuses', 'max_characters'], 500),
@@ -43,12 +48,17 @@ const mapDispatchToProps = (dispatch, props) => ({
     dispatch(changeCompose(text));
   },
 
-  onSubmit (missingAltText) {
+  onSubmit ({ missingAltText, quoteToPrivate }) {
     if (missingAltText) {
       dispatch(openModal({
         modalType: 'CONFIRM_MISSING_ALT_TEXT',
         modalProps: {},
       }));
+    } else if (quoteToPrivate) {
+      dispatch(openModal({
+        modalType: 'CONFIRM_PRIVATE_QUOTE_NOTIFY',
+        modalProps: {},
+      }));
     } else {
       dispatch(submitCompose((status) => {
         if (props.redirectOnSuccess) {
diff --git a/app/javascript/mastodon/features/compose/containers/privacy_dropdown_container.js b/app/javascript/mastodon/features/compose/containers/privacy_dropdown_container.js
index 6d3eef13a..803dcb1a4 100644
--- a/app/javascript/mastodon/features/compose/containers/privacy_dropdown_container.js
+++ b/app/javascript/mastodon/features/compose/containers/privacy_dropdown_container.js
@@ -1,8 +1,7 @@
 import { connect } from 'react-redux';
 
-import { changeComposeVisibility } from '../../../actions/compose';
-import { openModal, closeModal } from '../../../actions/modal';
-import { isUserTouching } from '../../../is_mobile';
+import { changeComposeVisibility } from '@/mastodon/actions/compose_typed';
+
 import PrivacyDropdown from '../components/privacy_dropdown';
 
 const mapStateToProps = state => ({
diff --git a/app/javascript/mastodon/features/ui/components/confirmation_modals/confirmation_modal.tsx b/app/javascript/mastodon/features/ui/components/confirmation_modals/confirmation_modal.tsx
index 47f9fca89..cfa50855a 100644
--- a/app/javascript/mastodon/features/ui/components/confirmation_modals/confirmation_modal.tsx
+++ b/app/javascript/mastodon/features/ui/components/confirmation_modals/confirmation_modal.tsx
@@ -18,6 +18,7 @@ export const ConfirmationModal: React.FC<
     onSecondary?: () => void;
     onConfirm: () => void;
     closeWhenConfirm?: boolean;
+    extraContent?: React.ReactNode;
   } & BaseConfirmationModalProps
 > = ({
   title,
@@ -29,6 +30,7 @@ export const ConfirmationModal: React.FC<
   secondary,
   onSecondary,
   closeWhenConfirm = true,
+  extraContent,
 }) => {
   const handleClick = useCallback(() => {
     if (closeWhenConfirm) {
@@ -49,6 +51,8 @@ export const ConfirmationModal: React.FC<
         <div className='safety-action-modal__confirmation'>
           <h1>{title}</h1>
           {message && <p>{message}</p>}
+
+          {extraContent}
         </div>
       </div>
 
diff --git a/app/javascript/mastodon/features/ui/components/confirmation_modals/private_quote_notify.tsx b/app/javascript/mastodon/features/ui/components/confirmation_modals/private_quote_notify.tsx
new file mode 100644
index 000000000..ef917a102
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/confirmation_modals/private_quote_notify.tsx
@@ -0,0 +1,88 @@
+import { forwardRef, useCallback, useState } from 'react';
+
+import { defineMessages, FormattedMessage, useIntl } from 'react-intl';
+
+import { submitCompose } from '@/mastodon/actions/compose';
+import { changeSetting } from '@/mastodon/actions/settings';
+import { CheckBox } from '@/mastodon/components/check_box';
+import { useAppDispatch } from '@/mastodon/store';
+
+import { ConfirmationModal } from './confirmation_modal';
+import type { BaseConfirmationModalProps } from './confirmation_modal';
+import classes from './styles.module.css';
+
+export const PRIVATE_QUOTE_MODAL_ID = 'quote/private_notify';
+
+const messages = defineMessages({
+  title: {
+    id: 'confirmations.private_quote_notify.title',
+    defaultMessage: 'Share with followers and mentioned users?',
+  },
+  message: {
+    id: 'confirmations.private_quote_notify.message',
+    defaultMessage:
+      'The person you are quoting and other mentions ' +
+      "will be notified and will be able to view your post, even if they're not following you.",
+  },
+  confirm: {
+    id: 'confirmations.private_quote_notify.confirm',
+    defaultMessage: 'Publish post',
+  },
+  cancel: {
+    id: 'confirmations.private_quote_notify.cancel',
+    defaultMessage: 'Back to editing',
+  },
+});
+
+export const PrivateQuoteNotify = forwardRef<
+  HTMLDivElement,
+  BaseConfirmationModalProps
+>(
+  (
+    { onClose },
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    _ref,
+  ) => {
+    const intl = useIntl();
+
+    const [dismiss, setDismissed] = useState(false);
+    const handleDismissToggle = useCallback(() => {
+      setDismissed((prev) => !prev);
+    }, []);
+
+    const dispatch = useAppDispatch();
+    const handleConfirm = useCallback(() => {
+      dispatch(submitCompose());
+      if (dismiss) {
+        dispatch(
+          changeSetting(['dismissed_banners', PRIVATE_QUOTE_MODAL_ID], true),
+        );
+      }
+    }, [dismiss, dispatch]);
+
+    return (
+      <ConfirmationModal
+        title={intl.formatMessage(messages.title)}
+        message={intl.formatMessage(messages.message)}
+        confirm={intl.formatMessage(messages.confirm)}
+        cancel={intl.formatMessage(messages.cancel)}
+        onConfirm={handleConfirm}
+        onClose={onClose}
+        extraContent={
+          <label className={classes.checkbox_wrapper}>
+            <CheckBox
+              value='hide'
+              checked={dismiss}
+              onChange={handleDismissToggle}
+            />{' '}
+            <FormattedMessage
+              id='confirmations.private_quote_notify.do_not_show_again'
+              defaultMessage="Don't show me this message again"
+            />
+          </label>
+        }
+      />
+    );
+  },
+);
+PrivateQuoteNotify.displayName = 'PrivateQuoteNotify';
diff --git a/app/javascript/mastodon/features/ui/components/confirmation_modals/styles.module.css b/app/javascript/mastodon/features/ui/components/confirmation_modals/styles.module.css
new file mode 100644
index 000000000..f685c4525
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/confirmation_modals/styles.module.css
@@ -0,0 +1,7 @@
+.checkbox_wrapper {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  margin: 1rem 0;
+  cursor: pointer;
+}
diff --git a/app/javascript/mastodon/features/ui/components/modal_root.jsx b/app/javascript/mastodon/features/ui/components/modal_root.jsx
index 944feb325..ad5f16d94 100644
--- a/app/javascript/mastodon/features/ui/components/modal_root.jsx
+++ b/app/javascript/mastodon/features/ui/components/modal_root.jsx
@@ -47,6 +47,7 @@ import MediaModal from './media_modal';
 import { ModalPlaceholder } from './modal_placeholder';
 import VideoModal from './video_modal';
 import { VisibilityModal } from './visibility_modal';
+import { PrivateQuoteNotify } from './confirmation_modals/private_quote_notify';
 
 export const MODAL_COMPONENTS = {
   'MEDIA': () => Promise.resolve({ default: MediaModal }),
@@ -66,6 +67,7 @@ export const MODAL_COMPONENTS = {
   'CONFIRM_LOG_OUT': () => Promise.resolve({ default: ConfirmLogOutModal }),
   'CONFIRM_FOLLOW_TO_LIST': () => Promise.resolve({ default: ConfirmFollowToListModal }),
   'CONFIRM_MISSING_ALT_TEXT': () => Promise.resolve({ default: ConfirmMissingAltTextModal }),
+  'CONFIRM_PRIVATE_QUOTE_NOTIFY': () => Promise.resolve({ default: PrivateQuoteNotify }),
   'CONFIRM_REVOKE_QUOTE': () => Promise.resolve({ default: ConfirmRevokeQuoteModal }),
   'CONFIRM_QUIET_QUOTE': () => Promise.resolve({ default: QuietPostQuoteInfoModal }),
   'MUTE': MuteModal,
diff --git a/app/javascript/mastodon/features/ui/components/visibility_modal.tsx b/app/javascript/mastodon/features/ui/components/visibility_modal.tsx
index afd9ee7ed..7bc7e0ab9 100644
--- a/app/javascript/mastodon/features/ui/components/visibility_modal.tsx
+++ b/app/javascript/mastodon/features/ui/components/visibility_modal.tsx
@@ -128,9 +128,12 @@ export const VisibilityModal: FC<VisibilityModalProps> = forwardRef(
     const disableVisibility = !!statusId;
     const disableQuotePolicy =
       visibility === 'private' || visibility === 'direct';
-    const disablePublicVisibilities: boolean = useAppSelector(
+    const disablePublicVisibilities = useAppSelector(
       selectDisablePublicVisibilities,
     );
+    const isQuotePost = useAppSelector(
+      (state) => state.compose.get('quoted_status_id') !== null,
+    );
 
     const visibilityItems = useMemo<SelectItem<StatusVisibility>[]>(() => {
       const items: SelectItem<StatusVisibility>[] = [
@@ -315,6 +318,21 @@ export const VisibilityModal: FC<VisibilityModalProps> = forwardRef(
                 id={quoteDescriptionId}
               />
             </div>
+
+            {isQuotePost && visibility === 'direct' && (
+              <div className='visibility-modal__quote-warning'>
+                <FormattedMessage
+                  id='visibility_modal.direct_quote_warning.title'
+                  defaultMessage="Quotes can't be embedded in private mentions"
+                  tagName='h3'
+                />
+                <FormattedMessage
+                  id='visibility_modal.direct_quote_warning.text'
+                  defaultMessage='If you save the current settings, the embedded quote will be converted to a link.'
+                  tagName='p'
+                />
+              </div>
+            )}
           </div>
           <div className='dialog-modal__content__actions'>
             <Button onClick={onClose} secondary>
diff --git a/app/javascript/mastodon/locales/en.json b/app/javascript/mastodon/locales/en.json
index ae4950e3b..6b4f6dd25 100644
--- a/app/javascript/mastodon/locales/en.json
+++ b/app/javascript/mastodon/locales/en.json
@@ -247,6 +247,11 @@
   "confirmations.missing_alt_text.secondary": "Post anyway",
   "confirmations.missing_alt_text.title": "Add alt text?",
   "confirmations.mute.confirm": "Mute",
+  "confirmations.private_quote_notify.cancel": "Back to editing",
+  "confirmations.private_quote_notify.confirm": "Publish post",
+  "confirmations.private_quote_notify.do_not_show_again": "Don't show me this message again",
+  "confirmations.private_quote_notify.message": "The person you are quoting and other mentions will be notified and will be able to view your post, even if they're not following you.",
+  "confirmations.private_quote_notify.title": "Share with followers and mentioned users?",
   "confirmations.quiet_post_quote_info.dismiss": "Don't remind me again",
   "confirmations.quiet_post_quote_info.got_it": "Got it",
   "confirmations.quiet_post_quote_info.message": "When quoting a quiet public post, your post will be hidden from trending timelines.",
@@ -1012,6 +1017,8 @@
   "video.volume_down": "Volume down",
   "video.volume_up": "Volume up",
   "visibility_modal.button_title": "Set visibility",
+  "visibility_modal.direct_quote_warning.text": "If you save the current settings, the embedded quote will be converted to a link.",
+  "visibility_modal.direct_quote_warning.title": "Quotes can't be embedded in private mentions",
   "visibility_modal.header": "Visibility and interaction",
   "visibility_modal.helper.direct_quoting": "Private mentions authored on Mastodon can't be quoted by others.",
   "visibility_modal.helper.privacy_editing": "Visibility can't be changed after a post is published.",
diff --git a/app/javascript/mastodon/reducers/compose.js b/app/javascript/mastodon/reducers/compose.js
index f27c3bb06..00db9dd4f 100644
--- a/app/javascript/mastodon/reducers/compose.js
+++ b/app/javascript/mastodon/reducers/compose.js
@@ -1,11 +1,12 @@
 import { Map as ImmutableMap, List as ImmutableList, OrderedSet as ImmutableOrderedSet, fromJS } from 'immutable';
 
 import {
+  changeComposeVisibility,
   changeUploadCompose,
   quoteCompose,
   quoteComposeCancel,
   setComposeQuotePolicy,
-} from 'mastodon/actions/compose_typed';
+} from '@/mastodon/actions/compose_typed';
 import { timelineDelete } from 'mastodon/actions/timelines_typed';
 
 import {
@@ -38,7 +39,6 @@ import {
   COMPOSE_SENSITIVITY_CHANGE,
   COMPOSE_SPOILERNESS_CHANGE,
   COMPOSE_SPOILER_TEXT_CHANGE,
-  COMPOSE_VISIBILITY_CHANGE,
   COMPOSE_LANGUAGE_CHANGE,
   COMPOSE_COMPOSING_CHANGE,
   COMPOSE_EMOJI_INSERT,
@@ -315,7 +315,11 @@ const calculateProgress = (loaded, total) => Math.min(Math.round((loaded / total
 
 /** @type {import('@reduxjs/toolkit').Reducer<typeof initialState>} */
 export const composeReducer = (state = initialState, action) => {
-  if (changeUploadCompose.fulfilled.match(action)) {
+  if (changeComposeVisibility.match(action)) {
+    return state
+      .set('privacy', action.payload)
+      .set('idempotencyKey', uuid());
+  } else if (changeUploadCompose.fulfilled.match(action)) {
     return state
       .set('is_changing_upload', false)
       .update('media_attachments', list => list.map(item => {
@@ -331,11 +335,27 @@ export const composeReducer = (state = initialState, action) => {
     return state.set('is_changing_upload', false);
   } else if (quoteCompose.match(action)) {
     const status = action.payload;
+    const isDirect = state.get('privacy') === 'direct';
     return state
-      .set('quoted_status_id', status.get('id'))
+      .set('quoted_status_id', isDirect ? null : status.get('id'))
       .set('spoiler', status.get('sensitive'))
       .set('spoiler_text', status.get('spoiler_text'))
-      .update('privacy', (visibility) => ['public', 'unlisted'].includes(visibility) && status.get('visibility') === 'private' ? 'private' : visibility);
+      .update('privacy', (visibility) => {
+        if (['public', 'unlisted'].includes(visibility) && status.get('visibility') === 'private') {
+          return 'private';
+        }
+        return visibility;
+      })
+      .update('text', (text) => {
+        if (!isDirect) {
+          return text;
+        }
+        const url = status.get('url');
+        if (text.includes(url)) {
+          return text;
+        }
+        return text.trim() ? `${text}\n\n${url}` : url;
+      });
   } else if (quoteComposeCancel.match(action)) {
     return state.set('quoted_status_id', null);
   } else if (setComposeQuotePolicy.match(action)) {
@@ -383,10 +403,6 @@ export const composeReducer = (state = initialState, action) => {
     return state
       .set('spoiler_text', action.text)
       .set('idempotencyKey', uuid());
-  case COMPOSE_VISIBILITY_CHANGE:
-    return state
-      .set('privacy', action.value)
-      .set('idempotencyKey', uuid());
   case COMPOSE_CHANGE:
     return state
       .set('text', action.text)
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 0ef95b014..b7478a00f 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -5743,6 +5743,34 @@ a.status-card {
   }
 }
 
+.visibility-modal {
+  &__quote-warning {
+    color: var(--nested-card-text);
+    background:
+      /* This is a bit of a silly hack for layering two background colours
+       * since --nested-card-background is too transparent for a tooltip */
+      linear-gradient(
+        var(--nested-card-background),
+        var(--nested-card-background)
+      ),
+      linear-gradient(var(--background-color), var(--background-color));
+    border: var(--nested-card-border);
+    padding: 16px;
+    border-radius: 4px;
+
+    h3 {
+      font-weight: 500;
+      margin-bottom: 4px;
+      color: $darker-text-color;
+    }
+
+    p {
+      font-size: 0.8em;
+      color: $dark-text-color;
+    }
+  }
+}
+
 .visibility-dropdown {
   &__overlay[data-popper-placement] {
     z-index: 9999;