diff --git a/app/javascript/flavours/glitch/features/collections/detail/index.tsx b/app/javascript/flavours/glitch/features/collections/detail/index.tsx
index 36a25f747d..ee4a8a1878 100644
--- a/app/javascript/flavours/glitch/features/collections/detail/index.tsx
+++ b/app/javascript/flavours/glitch/features/collections/detail/index.tsx
@@ -116,7 +116,7 @@ const RevokeControls: React.FC<{
   );
 };
 
-const PendingNote: React.FC = () => {
+export const PendingNote: React.FC = () => {
   return (
     <Callout
       variant='subtle'
diff --git a/app/javascript/flavours/glitch/features/collections/editor/accounts.tsx b/app/javascript/flavours/glitch/features/collections/editor/accounts.tsx
index 182d23aeb7..3d7200baf8 100644
--- a/app/javascript/flavours/glitch/features/collections/editor/accounts.tsx
+++ b/app/javascript/flavours/glitch/features/collections/editor/accounts.tsx
@@ -6,11 +6,11 @@ import { useHistory } from 'react-router-dom';
 
 import type { Map as ImmutableMap } from 'immutable';
 
-import { useComboboxItemProps } from '@/flavours/glitch/components/form_fields/combobox_field';
 import type { ApiMutedAccountJSON } from 'flavours/glitch/api_types/accounts';
 import type { ApiCollectionJSON } from 'flavours/glitch/api_types/collections';
 import { AccountListItem } from 'flavours/glitch/components/account_list_item';
 import { Avatar } from 'flavours/glitch/components/avatar';
+import { PendingBadge } from 'flavours/glitch/components/badge';
 import { Button } from 'flavours/glitch/components/button';
 import { DisplayName } from 'flavours/glitch/components/display_name';
 import { useAccountHandle } from 'flavours/glitch/components/display_name/default';
@@ -19,6 +19,7 @@ import {
   FormStack,
   ComboboxField,
 } from 'flavours/glitch/components/form_fields';
+import { useComboboxItemProps } from 'flavours/glitch/components/form_fields/combobox_field';
 import {
   ListItemContent,
   ListItemWrapper,
@@ -34,12 +35,14 @@ import { domain } from 'flavours/glitch/initial_state';
 import type { Relationship } from 'flavours/glitch/models/relationship';
 import {
   addCollectionItem,
-  getCollectionItemIds,
+  getEditorCollectionItems,
   removeCollectionItem,
   updateCollectionEditorField,
 } from 'flavours/glitch/reducers/slices/collections';
 import { useAppDispatch, useAppSelector } from 'flavours/glitch/store';
 
+import { PendingNote } from '../detail';
+
 import classes from './styles.module.scss';
 import { WizardStepTitle } from './wizard_step_title';
 
@@ -47,8 +50,9 @@ const MAX_ACCOUNT_COUNT = 25;
 
 const AddedAccountItem: React.FC<{
   accountId: string;
+  pending?: boolean;
   onRemove: (id: string) => void;
-}> = ({ accountId, onRemove }) => {
+}> = ({ accountId, pending, onRemove }) => {
   const handleRemoveAccount = useCallback(() => {
     onRemove(accountId);
   }, [accountId, onRemove]);
@@ -65,7 +69,13 @@ const AddedAccountItem: React.FC<{
     [handleRemoveAccount],
   );
 
-  return <AccountListItem accountId={accountId} renderButton={renderButton} />;
+  return (
+    <AccountListItem
+      accountId={accountId}
+      badge={pending && <PendingBadge />}
+      renderButton={renderButton}
+    />
+  );
 };
 
 const SuggestedAccountItem: React.FC<{ id: string }> = ({ id }) => {
@@ -186,22 +196,26 @@ export const CollectionAccounts: React.FC<{
   const { id, items: collectionItems } = collection ?? {};
   const isEditMode = !!id;
 
-  const addedAccountIds = useAppSelector(
-    (state) => state.collections.editor.accountIds,
+  const editorItemsFromState = useAppSelector(
+    (state) => state.collections.editor.items,
   );
 
-  // In edit mode, we're bypassing state and just return collection items directly,
-  // since they're edited "live", saving after each addition/deletion
-  const accountIds = useMemo(
+  // In edit mode, we're bypassing our Redux state and just work on the
+  // collection items directly since they're edited "live", saving right
+  // after each addition/deletion
+  const editorItems = useMemo(
     () =>
-      isEditMode ? getCollectionItemIds(collectionItems) : addedAccountIds,
-    [isEditMode, collectionItems, addedAccountIds],
+      isEditMode
+        ? getEditorCollectionItems(collectionItems)
+        : editorItemsFromState,
+    [isEditMode, collectionItems, editorItemsFromState],
   );
+  const hasPendingItems = editorItems.some((item) => item.state === 'pending');
 
   const [searchValue, setSearchValue] = useState('');
 
-  const hasAccounts = accountIds.length > 0;
-  const hasMaxAccounts = accountIds.length === MAX_ACCOUNT_COUNT;
+  const hasItems = editorItems.length > 0;
+  const hasMaxItems = editorItems.length === MAX_ACCOUNT_COUNT;
 
   const {
     accounts: suggestedAccounts,
@@ -211,7 +225,8 @@ export const CollectionAccounts: React.FC<{
   } = useSearchAccounts({
     withRelationships: true,
     // Don't suggest accounts that were already added
-    filterResults: (account) => !accountIds.includes(account.id),
+    filterResults: (account) =>
+      !editorItems.find((item) => item.account_id === account.id),
   });
 
   const relationships = useAppSelector((state) => state.relationships);
@@ -239,24 +254,33 @@ export const CollectionAccounts: React.FC<{
     (accountId: string) => {
       dispatch(
         updateCollectionEditorField({
-          field: 'accountIds',
-          value: accountIds.filter((id) => id !== accountId),
+          field: 'items',
+          value: editorItems.filter((item) => item.account_id !== accountId),
         }),
       );
     },
-    [accountIds, dispatch],
+    [editorItems, dispatch],
   );
 
   const addAccountItem = useCallback(
     (item: ApiMutedAccountJSON) => {
       dispatch(
         updateCollectionEditorField({
-          field: 'accountIds',
-          value: [...accountIds, item.id],
+          field: 'items',
+          value: [
+            ...editorItems,
+            {
+              account_id: item.id,
+              state:
+                item.feature_approval.current_user === 'manual'
+                  ? 'pending'
+                  : 'accepted',
+            },
+          ],
         }),
       );
     },
-    [accountIds, dispatch],
+    [editorItems, dispatch],
   );
 
   const instantRemoveAccountItem = useCallback(
@@ -322,12 +346,10 @@ export const CollectionAccounts: React.FC<{
       e.preventDefault();
 
       if (!id) {
-        history.push(`/collections/new/details`, {
-          account_ids: accountIds,
-        });
+        history.push('/collections/new/details');
       }
     },
-    [id, history, accountIds],
+    [id, history],
   );
 
   const inputId = useId();
@@ -348,16 +370,17 @@ export const CollectionAccounts: React.FC<{
               }
             />
           )}
+          {hasPendingItems && <PendingNote />}
           <ComboboxField
             id={inputId}
             label={intl.formatMessage({
               id: 'collections.search_accounts_label',
               defaultMessage: 'Search for an account to add',
             })}
-            value={hasMaxAccounts ? '' : searchValue}
+            value={hasMaxItems ? '' : searchValue}
             onChange={handleSearchValueChange}
             onKeyDown={handleSearchKeyDown}
-            disabled={hasMaxAccounts}
+            disabled={hasMaxItems}
             isLoading={isLoadingSuggestions}
             items={groupedItems}
             getItemId={getItemId}
@@ -366,7 +389,7 @@ export const CollectionAccounts: React.FC<{
             renderGroupTitle={renderGroupTitle}
             onSelectItem={handleSelectItem}
             status={
-              hasMaxAccounts
+              hasMaxItems
                 ? {
                     variant: 'warning',
                     message: intl.formatMessage({
@@ -381,12 +404,12 @@ export const CollectionAccounts: React.FC<{
         </header>
 
         <div>
-          {hasAccounts && (
+          {hasItems && (
             <AccountsHeadingElement className={classes.listHeading}>
               <FormattedMessage
                 id='collections.hints.accounts_counter'
                 defaultMessage='{count}/{max} accounts'
-                values={{ count: accountIds.length, max: MAX_ACCOUNT_COUNT }}
+                values={{ count: editorItems.length, max: MAX_ACCOUNT_COUNT }}
               />
             </AccountsHeadingElement>
           )}
@@ -413,14 +436,15 @@ export const CollectionAccounts: React.FC<{
                 />
               }
             >
-              {accountIds.map((accountId, index) => (
+              {editorItems.map(({ account_id, state }, index) => (
                 <Article
-                  key={accountId}
+                  key={account_id}
                   aria-posinset={index}
-                  aria-setsize={accountIds.length}
+                  aria-setsize={editorItems.length}
                 >
                   <AddedAccountItem
-                    accountId={accountId}
+                    accountId={account_id}
+                    pending={state === 'pending'}
                     onRemove={handleRemoveAccountItem}
                   />
                 </Article>
@@ -429,7 +453,7 @@ export const CollectionAccounts: React.FC<{
           </Scrollable>
         </div>
       </FormStack>
-      {!isEditMode && hasAccounts && (
+      {!isEditMode && hasItems && (
         <div className={classes.stickyFooter}>
           <Button type='submit'>
             {id ? (
diff --git a/app/javascript/flavours/glitch/features/collections/editor/details.tsx b/app/javascript/flavours/glitch/features/collections/editor/details.tsx
index 8025ad617f..f120143ba6 100644
--- a/app/javascript/flavours/glitch/features/collections/editor/details.tsx
+++ b/app/javascript/flavours/glitch/features/collections/editor/details.tsx
@@ -46,7 +46,7 @@ import { WizardStepTitle } from './wizard_step_title';
 export const CollectionDetails: React.FC = () => {
   const dispatch = useAppDispatch();
   const history = useHistory();
-  const { id, name, description, topic, discoverable, sensitive, accountIds } =
+  const { id, name, description, topic, discoverable, sensitive, items } =
     useAppSelector((state) => state.collections.editor);
 
   const handleNameChange = useCallback(
@@ -123,7 +123,7 @@ export const CollectionDetails: React.FC = () => {
           description,
           discoverable,
           sensitive,
-          account_ids: accountIds,
+          account_ids: items.map((item) => item.account_id),
         };
         if (topic) {
           payload.tag_name = topic;
@@ -152,7 +152,7 @@ export const CollectionDetails: React.FC = () => {
       sensitive,
       dispatch,
       history,
-      accountIds,
+      items,
       currentUserName,
     ],
   );
diff --git a/app/javascript/flavours/glitch/reducers/slices/collections.ts b/app/javascript/flavours/glitch/reducers/slices/collections.ts
index 76721a07b1..a95f19dc3a 100644
--- a/app/javascript/flavours/glitch/reducers/slices/collections.ts
+++ b/app/javascript/flavours/glitch/reducers/slices/collections.ts
@@ -16,6 +16,7 @@ import type {
   ApiCollectionJSON,
   ApiCreateCollectionPayload,
   ApiUpdateCollectionPayload,
+  CollectionAccountItem,
 } from '@/flavours/glitch/api_types/collections';
 import { me } from '@/flavours/glitch/initial_state';
 import {
@@ -41,6 +42,16 @@ interface CollectionState {
   editor: EditorState;
 }
 
+/**
+ * This is a subset of the `CollectionAccountItem` type
+ * for use in the editor. Here, `account_id` is always defined
+ * and `state` is more limited.
+ */
+export interface EditorCollectionItem {
+  account_id: string;
+  state: 'pending' | 'accepted';
+}
+
 interface EditorState {
   id: string | null;
   name: string;
@@ -49,7 +60,7 @@ interface EditorState {
   language: string | null;
   discoverable: boolean;
   sensitive: boolean;
-  accountIds: string[];
+  items: EditorCollectionItem[];
 }
 
 interface UpdateEditorFieldPayload<K extends keyof EditorState> {
@@ -68,7 +79,7 @@ const initialState: CollectionState = {
     language: null,
     discoverable: true,
     sensitive: false,
-    accountIds: [],
+    items: [],
   },
 };
 
@@ -87,7 +98,7 @@ const collectionSlice = createSlice({
         language: collection?.language ?? '',
         discoverable: collection?.discoverable ?? true,
         sensitive: collection?.sensitive ?? false,
-        accountIds: getCollectionItemIds(collection?.items ?? []),
+        items: getEditorCollectionItems(collection?.items ?? []),
       };
     },
     reset(state) {
@@ -338,7 +349,12 @@ export const selectAccountCollections = createAppSelector(
   },
 );
 
-const onlyExistingIds = (id?: string): id is string => !!id;
+const isEditorItem = (
+  item: Partial<CollectionAccountItem>,
+): item is EditorCollectionItem =>
+  !!item.account_id && (item.state === 'accepted' || item.state === 'pending');
 
-export const getCollectionItemIds = (items?: ApiCollectionJSON['items']) =>
-  items?.map((item) => item.account_id).filter(onlyExistingIds) ?? [];
+export const getEditorCollectionItems = (items?: CollectionAccountItem[]) =>
+  items
+    ?.map(({ account_id, state }) => ({ account_id, state }))
+    .filter(isEditorItem) ?? [];