diff --git a/.changeset/true-baboons-fold.md b/.changeset/true-baboons-fold.md
new file mode 100644
index 0000000000..1233a913a3
--- /dev/null
+++ b/.changeset/true-baboons-fold.md
@@ -0,0 +1,10 @@
+---
+'@backstage/plugin-notifications': patch
+---
+
+Improve customization of the notification snackbar.
+
+Users can now customize the notification snackbar by providing custom components and icons
+for different severity levels. Additionally, the location of the snackbar notifications
+can be modified, the density of the snackbar can be changed, and the number of snacks can
+be limited.
diff --git a/plugins/notifications/report.api.md b/plugins/notifications/report.api.md
index 62c41d07c7..a9aeb64cda 100644
--- a/plugins/notifications/report.api.md
+++ b/plugins/notifications/report.api.md
@@ -13,6 +13,7 @@ import { Notification as Notification_2 } from '@backstage/plugin-notifications-
 import { NotificationSettings } from '@backstage/plugin-notifications-common';
 import { NotificationSeverity } from '@backstage/plugin-notifications-common';
 import { NotificationStatus } from '@backstage/plugin-notifications-common';
+import * as React_2 from 'react';
 import { RouteRef } from '@backstage/core-plugin-api';
 import { TableProps } from '@backstage/core-components';
 
@@ -100,6 +101,23 @@ export class NotificationsClient implements NotificationsApi {
   ): Promise<NotificationSettings>;
 }
 
+// @public (undocumented)
+export type NotificationSnackbarProperties = {
+  enabled?: boolean;
+  autoHideDuration?: number | null;
+  anchorOrigin?: {
+    vertical: 'top' | 'bottom';
+    horizontal: 'left' | 'center' | 'right';
+  };
+  dense?: boolean;
+  maxSnack?: number;
+  snackStyle?: React_2.CSSProperties;
+  iconVariant?: Partial<Record<NotificationSeverity, React_2.ReactNode>>;
+  Components?: {
+    [key in NotificationSeverity]: React_2.JSXElementConstructor<any>;
+  };
+};
+
 // @public (undocumented)
 export const NotificationsPage: (
   props?: NotificationsPageProps,
@@ -125,17 +143,23 @@ export const notificationsPlugin: BackstagePlugin<
 >;
 
 // @public (undocumented)
-export const NotificationsSidebarItem: (props?: {
+export const NotificationsSidebarItem: (
+  props?: NotificationsSideBarItemProps,
+) => JSX_2.Element;
+
+// @public (undocumented)
+export type NotificationsSideBarItemProps = {
   webNotificationsEnabled?: boolean;
   titleCounterEnabled?: boolean;
   snackbarEnabled?: boolean;
   snackbarAutoHideDuration?: number | null;
+  snackbarProps?: NotificationSnackbarProperties;
   className?: string;
   icon?: IconComponent;
   text?: string;
   disableHighlight?: boolean;
   noTrack?: boolean;
-}) => JSX_2.Element;
+};
 
 // @public (undocumented)
 export const NotificationsTable: ({
diff --git a/plugins/notifications/src/components/NotificationsSideBarItem/NotificationsSideBarItem.tsx b/plugins/notifications/src/components/NotificationsSideBarItem/NotificationsSideBarItem.tsx
index 2a2f56da6a..c76c5d1871 100644
--- a/plugins/notifications/src/components/NotificationsSideBarItem/NotificationsSideBarItem.tsx
+++ b/plugins/notifications/src/components/NotificationsSideBarItem/NotificationsSideBarItem.tsx
@@ -13,7 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { useState, useCallback, useEffect } from 'react';
+import * as React from 'react';
+import { useCallback, useEffect, useMemo, useState } from 'react';
 import { useNotificationsApi } from '../../hooks';
 import { Link, SidebarItem } from '@backstage/core-components';
 import NotificationsIcon from '@material-ui/icons/Notifications';
@@ -27,6 +28,7 @@ import { rootRouteRef } from '../../routes';
 import { useSignal } from '@backstage/plugin-signals-react';
 import {
   Notification,
+  NotificationSeverity,
   NotificationSignal,
 } from '@backstage/plugin-notifications-common';
 import { useWebNotifications } from '../../hooks/useWebNotifications';
@@ -79,18 +81,51 @@ declare module 'notistack' {
   }
 }
 
-/** @public */
-export const NotificationsSidebarItem = (props?: {
+/**
+ * @public
+ */
+export type NotificationSnackbarProperties = {
+  enabled?: boolean;
+  autoHideDuration?: number | null;
+  anchorOrigin?: {
+    vertical: 'top' | 'bottom';
+    horizontal: 'left' | 'center' | 'right';
+  };
+  dense?: boolean;
+  maxSnack?: number;
+  snackStyle?: React.CSSProperties;
+  iconVariant?: Partial<Record<NotificationSeverity, React.ReactNode>>;
+  Components?: {
+    [key in NotificationSeverity]: React.JSXElementConstructor<any>;
+  };
+};
+
+/**
+ * @public
+ */
+export type NotificationsSideBarItemProps = {
   webNotificationsEnabled?: boolean;
   titleCounterEnabled?: boolean;
+  /**
+   * @deprecated Use `snackbarProps` instead.
+   */
   snackbarEnabled?: boolean;
+  /**
+   * @deprecated Use `snackbarProps` instead.
+   */
   snackbarAutoHideDuration?: number | null;
+  snackbarProps?: NotificationSnackbarProperties;
   className?: string;
   icon?: IconComponent;
   text?: string;
   disableHighlight?: boolean;
   noTrack?: boolean;
-}) => {
+};
+
+/** @public */
+export const NotificationsSidebarItem = (
+  props?: NotificationsSideBarItemProps,
+) => {
   const {
     webNotificationsEnabled = false,
     titleCounterEnabled = true,
@@ -102,10 +137,21 @@ export const NotificationsSidebarItem = (props?: {
   } = props ?? {
     webNotificationsEnabled: false,
     titleCounterEnabled: true,
-    snackbarEnabled: true,
-    snackbarAutoHideDuration: 10000,
+    snackbarProps: {
+      enabled: true,
+      autoHideDuration: 10000,
+    },
   };
 
+  const snackbarProps = useMemo(
+    () =>
+      props?.snackbarProps ?? {
+        enabled: snackbarEnabled,
+        autoHideDuration: snackbarAutoHideDuration,
+      },
+    [props?.snackbarProps, snackbarAutoHideDuration, snackbarEnabled],
+  );
+
   const { loading, error, value, retry } = useNotificationsApi(api =>
     api.getStatus(),
   );
@@ -185,7 +231,7 @@ export const NotificationsSidebarItem = (props?: {
   useEffect(() => {
     const handleNotificationSignal = (signal: NotificationSignal) => {
       if (
-        (!webNotificationsEnabled && !snackbarEnabled) ||
+        (!webNotificationsEnabled && !snackbarProps.enabled) ||
         signal.action !== 'new_notification'
       ) {
         return;
@@ -204,7 +250,7 @@ export const NotificationsSidebarItem = (props?: {
               link: notification.payload.link,
             });
           }
-          if (snackbarEnabled) {
+          if (snackbarProps.enabled) {
             const { action } = getSnackbarProperties(notification);
             const snackBarText =
               notification.payload.title.length > 50
@@ -212,10 +258,14 @@ export const NotificationsSidebarItem = (props?: {
                 : notification.payload.title;
             enqueueSnackbar(snackBarText, {
               key: notification.id,
+              style: snackbarProps.snackStyle,
               variant: notification.payload.severity,
-              anchorOrigin: { vertical: 'bottom', horizontal: 'right' },
+              anchorOrigin: snackbarProps.anchorOrigin ?? {
+                vertical: 'bottom',
+                horizontal: 'right',
+              },
               action,
-              autoHideDuration: snackbarAutoHideDuration,
+              autoHideDuration: snackbarProps.autoHideDuration,
             } as OptionsWithExtraProps<VariantType>);
           }
         })
@@ -235,11 +285,10 @@ export const NotificationsSidebarItem = (props?: {
     lastSignal,
     sendWebNotification,
     webNotificationsEnabled,
-    snackbarEnabled,
-    snackbarAutoHideDuration,
     notificationsApi,
     alertApi,
     getSnackbarProperties,
+    snackbarProps,
   ]);
 
   useEffect(() => {
@@ -261,16 +310,30 @@ export const NotificationsSidebarItem = (props?: {
       {snackbarEnabled && (
         <SnackbarProvider
           iconVariant={{
-            normal: <SeverityIcon severity="normal" />,
-            critical: <SeverityIcon severity="critical" />,
-            high: <SeverityIcon severity="high" />,
-            low: <SeverityIcon severity="low" />,
+            normal: snackbarProps?.iconVariant?.normal ?? (
+              <SeverityIcon severity="normal" />
+            ),
+            critical: snackbarProps?.iconVariant?.critical ?? (
+              <SeverityIcon severity="critical" />
+            ),
+            high: snackbarProps?.iconVariant?.high ?? (
+              <SeverityIcon severity="high" />
+            ),
+            low: snackbarProps?.iconVariant?.low ?? (
+              <SeverityIcon severity="low" />
+            ),
           }}
+          dense={snackbarProps?.dense}
+          maxSnack={snackbarProps?.maxSnack}
           Components={{
-            normal: StyledMaterialDesignContent,
-            critical: StyledMaterialDesignContent,
-            high: StyledMaterialDesignContent,
-            low: StyledMaterialDesignContent,
+            normal:
+              snackbarProps?.Components?.normal ?? StyledMaterialDesignContent,
+            critical:
+              snackbarProps?.Components?.critical ??
+              StyledMaterialDesignContent,
+            high:
+              snackbarProps?.Components?.high ?? StyledMaterialDesignContent,
+            low: snackbarProps?.Components?.low ?? StyledMaterialDesignContent,
           }}
         />
       )}