diff --git a/locales/en-US.yml b/locales/en-US.yml
index f4913e9041..0a0f86a106 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -12,6 +12,7 @@ fetchingAsApObject: "Fetching from the Fediverse"
 ok: "OK"
 gotIt: "Got it!"
 cancel: "Cancel"
+noThankYou: "No thank you"
 enterUsername: "Enter username"
 renotedBy: "Boosted by {user}"
 noNotes: "No posts"
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 64d804928e..29e2416222 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -12,6 +12,7 @@ fetchingAsApObject: "連合宇宙から取得中"
 ok: "OK"
 gotIt: "わかった！"
 cancel: "キャンセル"
+noThankYou: "やめておく"
 enterUsername: "ユーザー名を入力"
 renotedBy: "{user}がブースト"
 noNotes: "投稿はありません"
diff --git a/packages/backend/migration/1669138716634-whetherPushNotifyToSendReadMessage.js b/packages/backend/migration/1669138716634-whetherPushNotifyToSendReadMessage.js
new file mode 100644
index 0000000000..2265b00617
--- /dev/null
+++ b/packages/backend/migration/1669138716634-whetherPushNotifyToSendReadMessage.js
@@ -0,0 +1,11 @@
+export class whetherPushNotifyToSendReadMessage1669138716634 {
+    name = 'whetherPushNotifyToSendReadMessage1669138716634'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "sw_subscription" ADD "sendReadMessage" boolean NOT NULL DEFAULT false`);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "sw_subscription" DROP COLUMN "sendReadMessage"`);
+    }
+}
diff --git a/packages/backend/src/models/entities/sw-subscription.ts b/packages/backend/src/models/entities/sw-subscription.ts
index 26891c1ce7..8f18688eab 100644
--- a/packages/backend/src/models/entities/sw-subscription.ts
+++ b/packages/backend/src/models/entities/sw-subscription.ts
@@ -41,4 +41,9 @@ export class SwSubscription {
 		length: 128,
 	})
 	public publickey: string;
+
+	@Column('boolean', {
+		default: false,
+	})
+	public sendReadMessage: boolean;
 }
diff --git a/packages/backend/src/server/api/endpoints.ts b/packages/backend/src/server/api/endpoints.ts
index 920f871995..57a3ce4dc2 100644
--- a/packages/backend/src/server/api/endpoints.ts
+++ b/packages/backend/src/server/api/endpoints.ts
@@ -290,6 +290,8 @@ import * as ep___resetDb from "./endpoints/reset-db.js";
 import * as ep___resetPassword from "./endpoints/reset-password.js";
 import * as ep___serverInfo from "./endpoints/server-info.js";
 import * as ep___stats from "./endpoints/stats.js";
+import * as ep___sw_show_registration from './endpoints/sw/show-registration.js';
+import * as ep___sw_update_registration from './endpoints/sw/update-registration.js';
 import * as ep___sw_register from "./endpoints/sw/register.js";
 import * as ep___sw_unregister from "./endpoints/sw/unregister.js";
 import * as ep___test from "./endpoints/test.js";
@@ -637,6 +639,8 @@ const eps = [
 	["stats", ep___stats],
 	["sw/register", ep___sw_register],
 	["sw/unregister", ep___sw_unregister],
+	['sw/show-registration', ep___sw_show_registration],
+	['sw/update-registration', ep___sw_update_registration],
 	["test", ep___test],
 	["username/available", ep___username_available],
 	["users", ep___users],
diff --git a/packages/backend/src/server/api/endpoints/sw/register.ts b/packages/backend/src/server/api/endpoints/sw/register.ts
index 7218b0d50a..d2b805d974 100644
--- a/packages/backend/src/server/api/endpoints/sw/register.ts
+++ b/packages/backend/src/server/api/endpoints/sw/register.ts
@@ -26,6 +26,18 @@ export const meta = {
 				optional: false,
 				nullable: true,
 			},
+			userId: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			endpoint: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			sendReadMessage: {
+				type: 'boolean',
+				optional: false, nullable: false,
+			},
 		},
 	},
 } as const;
@@ -36,14 +48,15 @@ export const paramDef = {
 		endpoint: { type: "string" },
 		auth: { type: "string" },
 		publickey: { type: "string" },
+		sendReadMessage: { type: 'boolean', default: false },
 	},
 	required: ["endpoint", "auth", "publickey"],
 } as const;
 
-export default define(meta, paramDef, async (ps, user) => {
+export default define(meta, paramDef, async (ps, me) => {
 	// if already subscribed
 	const exist = await SwSubscriptions.findOneBy({
-		userId: user.id,
+		userId: me.id,
 		endpoint: ps.endpoint,
 		auth: ps.auth,
 		publickey: ps.publickey,
@@ -55,20 +68,27 @@ export default define(meta, paramDef, async (ps, user) => {
 		return {
 			state: "already-subscribed" as const,
 			key: instance.swPublicKey,
+			userId: me.id,
+			endpoint: exist.endpoint,
+			sendReadMessage: exist.sendReadMessage,
 		};
 	}
 
 	await SwSubscriptions.insert({
 		id: genId(),
 		createdAt: new Date(),
-		userId: user.id,
+		userId: me.id,
 		endpoint: ps.endpoint,
 		auth: ps.auth,
 		publickey: ps.publickey,
+		sendReadMessage: ps.sendReadMessage,
 	});
 
 	return {
 		state: "subscribed" as const,
 		key: instance.swPublicKey,
+		userId: me.id,
+		endpoint: ps.endpoint,
+		sendReadMessage: ps.sendReadMessage,
 	};
 });
diff --git a/packages/backend/src/server/api/endpoints/sw/show-registration.ts b/packages/backend/src/server/api/endpoints/sw/show-registration.ts
new file mode 100644
index 0000000000..25eb53f527
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/sw/show-registration.ts
@@ -0,0 +1,55 @@
+import { SwSubscriptions } from '@/models/index.js';
+import define from "../../define.js";
+
+export const meta = {
+	tags: ['account'],
+
+	requireCredential: true,
+
+	description: 'Check push notification registration exists.',
+
+	res: {
+		type: 'object',
+		optional: false, nullable: true,
+		properties: {
+			userId: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			endpoint: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			sendReadMessage: {
+				type: 'boolean',
+				optional: false, nullable: false,
+			},
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		endpoint: { type: 'string' },
+	},
+	required: ['endpoint'],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+export default define(meta, paramDef, async (ps, me) => {
+	const exist = await SwSubscriptions.findOneBy({
+		userId: me.id,
+		endpoint: ps.endpoint,
+	});
+
+	if (exist != null) {
+		return {
+			userId: exist.userId,
+			endpoint: exist.endpoint,
+			sendReadMessage: exist.sendReadMessage,
+		};
+	}
+
+	return null;
+});
diff --git a/packages/backend/src/server/api/endpoints/sw/unregister.ts b/packages/backend/src/server/api/endpoints/sw/unregister.ts
index b025630e4b..e2a40f51cb 100644
--- a/packages/backend/src/server/api/endpoints/sw/unregister.ts
+++ b/packages/backend/src/server/api/endpoints/sw/unregister.ts
@@ -4,7 +4,7 @@ import define from "../../define.js";
 export const meta = {
 	tags: ["account"],
 
-	requireCredential: true,
+	requireCredential: false,
 
 	description: "Unregister from receiving push notifications.",
 } as const;
@@ -17,9 +17,9 @@ export const paramDef = {
 	required: ["endpoint"],
 } as const;
 
-export default define(meta, paramDef, async (ps, user) => {
+export default define(meta, paramDef, async (ps, me) => {
 	await SwSubscriptions.delete({
-		userId: user.id,
+		...(me ? { userId: me.id } : {}),
 		endpoint: ps.endpoint,
 	});
 });
diff --git a/packages/backend/src/server/api/endpoints/sw/update-registration.ts b/packages/backend/src/server/api/endpoints/sw/update-registration.ts
new file mode 100644
index 0000000000..0b0a56d499
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/sw/update-registration.ts
@@ -0,0 +1,44 @@
+import { SwSubscriptions } from "@/models/index.js";
+import define from "../../define.js";
+
+export const meta = {
+	tags: ["account"],
+
+	requireCredential: true,
+
+	description: "Unregister from receiving push notifications.",
+} as const;
+
+export const paramDef = {
+	type: "object",
+	properties: {
+		endpoint: { type: "string" },
+		sendReadMessage: { type: 'boolean' },
+	},
+	required: ["endpoint"],
+} as const;
+
+export default define(meta, paramDef, async (ps, me) => {
+	const swSubscription = await SwSubscriptions.findOneBy({
+		userId: me.id,
+		endpoint: ps.endpoint,
+	});
+
+	if (swSubscription === null) {
+		throw new Error("No such registration");
+	}
+
+	if (ps.sendReadMessage !== undefined) {
+		swSubscription.sendReadMessage = ps.sendReadMessage;
+	}
+
+	await SwSubscriptions.update(swSubscription.id, {
+		sendReadMessage: swSubscription.sendReadMessage,
+	});
+
+	return {
+		userId: swSubscription.userId,
+		endpoint: swSubscription.endpoint,
+		sendReadMessage: swSubscription.sendReadMessage,
+	};
+});
diff --git a/packages/backend/src/services/push-notification.ts b/packages/backend/src/services/push-notification.ts
index 0e51ad9675..a3abaf769c 100644
--- a/packages/backend/src/services/push-notification.ts
+++ b/packages/backend/src/services/push-notification.ts
@@ -63,6 +63,13 @@ export async function pushNotification<T extends keyof pushNotificationsTypes>(
 	});
 
 	for (const subscription of subscriptions) {
+		if ([
+			'readNotifications',
+			'readAllNotifications',
+			'readAllMessagingMessages',
+			'readAllMessagingMessagesOfARoom',
+		].includes(type) && !subscription.sendReadMessage) continue;
+
 		const pushSubscription = {
 			endpoint: subscription.endpoint,
 			keys: {
diff --git a/packages/client/src/components/MkPushNotificationAllowButton.vue b/packages/client/src/components/MkPushNotificationAllowButton.vue
new file mode 100644
index 0000000000..b98c814f24
--- /dev/null
+++ b/packages/client/src/components/MkPushNotificationAllowButton.vue
@@ -0,0 +1,171 @@
+<template>
+<MkButton
+	v-if="supported && !pushRegistrationInServer"
+	type="button"
+	primary
+	:gradate="gradate"
+	:rounded="rounded"
+	:inline="inline"
+	:autofocus="autofocus"
+	:wait="wait"
+	:full="full"
+	@click="subscribe"
+>
+	{{ i18n.ts.subscribePushNotification }}
+</MkButton>
+<MkButton
+	v-else-if="!showOnlyToRegister && ($i ? pushRegistrationInServer : pushSubscription)"
+	type="button"
+	:primary="false"
+	:gradate="gradate"
+	:rounded="rounded"
+	:inline="inline"
+	:autofocus="autofocus"
+	:wait="wait"
+	:full="full"
+	@click="unsubscribe"
+>
+	{{ i18n.ts.unsubscribePushNotification }}
+</MkButton>
+<MkButton v-else-if="$i && pushRegistrationInServer" disabled :rounded="rounded" :inline="inline" :wait="wait" :full="full">
+	{{ i18n.ts.pushNotificationAlreadySubscribed }}
+</MkButton>
+<MkButton v-else-if="!supported" disabled :rounded="rounded" :inline="inline" :wait="wait" :full="full">
+	{{ i18n.ts.pushNotificationNotSupported }}
+</MkButton>
+</template>
+
+<script setup lang="ts">
+import { $i, getAccounts } from '@/account';
+import MkButton from '@/components/MkButton.vue';
+import { instance } from '@/instance';
+import { api, apiWithDialog, promiseDialog } from '@/os';
+import { i18n } from '@/i18n';
+
+defineProps<{
+	primary?: boolean;
+	gradate?: boolean;
+	rounded?: boolean;
+	inline?: boolean;
+	link?: boolean;
+	to?: string;
+	autofocus?: boolean;
+	wait?: boolean;
+	danger?: boolean;
+	full?: boolean;
+	showOnlyToRegister?: boolean;
+}>();
+
+// ServiceWorker registration
+let registration = $ref<ServiceWorkerRegistration | undefined>();
+// If this browser supports push notification
+let supported = $ref(false);
+// If this browser has already subscribed to push notification
+let pushSubscription = $ref<PushSubscription | null>(null);
+let pushRegistrationInServer = $ref<{ state?: string; key?: string; userId: string; endpoint: string; sendReadMessage: boolean; } | undefined>();
+
+function subscribe() {
+	if (!registration || !supported || !instance.swPublickey) return;
+
+	// SEE: https://developer.mozilla.org/en-US/docs/Web/API/PushManager/subscribe#Parameters
+	return promiseDialog(registration.pushManager.subscribe({
+		userVisibleOnly: true,
+		applicationServerKey: urlBase64ToUint8Array(instance.swPublickey),
+	})
+	.then(async subscription => {
+		pushSubscription = subscription;
+
+		// Register
+		pushRegistrationInServer = await api('sw/register', {
+			endpoint: subscription.endpoint,
+			auth: encode(subscription.getKey('auth')),
+			publickey: encode(subscription.getKey('p256dh')),
+		});
+	}, async err => { // When subscribe failed
+		// 通知が許可されていなかったとき
+		if (err?.name === 'NotAllowedError') {
+			console.info('User denied the notification permission request.');
+			return;
+		}
+
+		// 違うapplicationServerKey (または gcm_sender_id)のサブスクリプションが
+		// 既に存在していることが原因でエラーになった可能性があるので、
+		// そのサブスクリプションを解除しておく
+		// （これは実行されなさそうだけど、おまじない的に古い実装から残してある）
+		await unsubscribe();
+	}), null, null);
+}
+
+async function unsubscribe() {
+	if (!pushSubscription) return;
+
+	const endpoint = pushSubscription.endpoint;
+	const accounts = await getAccounts();
+
+	pushRegistrationInServer = undefined;
+
+	if ($i && accounts.length >= 2) {
+		apiWithDialog('sw/unregister', {
+			i: $i.token,
+			endpoint,
+		});
+	} else {
+		pushSubscription.unsubscribe();
+		apiWithDialog('sw/unregister', {
+			endpoint,
+		});
+		pushSubscription = null;
+	}
+}
+
+function encode(buffer: ArrayBuffer | null) {
+	return btoa(String.fromCharCode.apply(null, new Uint8Array(buffer)));
+}
+
+/**
+ * Convert the URL safe base64 string to a Uint8Array
+ * @param base64String base64 string
+ */
+function urlBase64ToUint8Array(base64String: string): Uint8Array {
+	const padding = '='.repeat((4 - base64String.length % 4) % 4);
+	const base64 = (base64String + padding)
+		.replace(/-/g, '+')
+		.replace(/_/g, '/');
+
+	const rawData = window.atob(base64);
+	const outputArray = new Uint8Array(rawData.length);
+
+	for (let i = 0; i < rawData.length; ++i) {
+		outputArray[i] = rawData.charCodeAt(i);
+	}
+	return outputArray;
+}
+
+if (navigator.serviceWorker == null) {
+	// TODO: よしなに？
+} else {
+	navigator.serviceWorker.ready.then(async swr => {
+		registration = swr;
+
+		pushSubscription = await registration.pushManager.getSubscription();
+
+		if (instance.swPublickey && ('PushManager' in window) && $i && $i.token) {
+			supported = true;
+
+			if (pushSubscription) {
+				const res = await api('sw/show-registration', {
+					endpoint: pushSubscription.endpoint,
+				});
+
+				if (res) {
+					pushRegistrationInServer = res;
+				}
+			}
+		}
+	});
+}
+
+defineExpose({
+	pushRegistrationInServer: $$(pushRegistrationInServer),
+});
+</script>
diff --git a/packages/client/src/components/MkTutorialDialog.vue b/packages/client/src/components/MkTutorialDialog.vue
index c077d3fc5f..77cc4de6fb 100644
--- a/packages/client/src/components/MkTutorialDialog.vue
+++ b/packages/client/src/components/MkTutorialDialog.vue
@@ -106,6 +106,7 @@
 						<MkSparkle>
 							<h3>{{ i18n.ts._tutorial.step6_4 }} <Mfm text="$[shake 🚀]"></Mfm></h3>
 						</MkSparkle>
+						<MkPushNotificationAllowButton primary show-only-to-register/>
 					</div>
 				</Transition>
 			</div>
@@ -122,6 +123,7 @@ import MkButton from '@/components/MkButton.vue';
 import XFeaturedUsers from '@/pages/explore.users.vue';
 import XPostForm from '@/components/MkPostForm.vue';
 import MkSparkle from '@/components/MkSparkle.vue';
+import MkPushNotificationAllowButton from '@/components/MkPushNotificationAllowButton.vue';
 import { defaultStore } from '@/store';
 import { i18n } from '@/i18n';
 import { $i } from '@/account';
diff --git a/packages/client/src/pages/settings/notifications.vue b/packages/client/src/pages/settings/notifications.vue
index b0bf970bca..586da9e154 100644
--- a/packages/client/src/pages/settings/notifications.vue
+++ b/packages/client/src/pages/settings/notifications.vue
@@ -6,6 +6,21 @@
 		<FormButton class="_formBlock" @click="readAllUnreadNotes">{{ i18n.ts.markAsReadAllUnreadNotes }}</FormButton>
 		<FormButton class="_formBlock" @click="readAllMessagingMessages">{{ i18n.ts.markAsReadAllTalkMessages }}</FormButton>
 	</FormSection>
+	<FormSection>
+		<template #label>{{ i18n.ts.pushNotification }}</template>
+
+		<div class="_gaps_m">
+			<MkPushNotificationAllowButton ref="allowButton"/>
+			<MkSwitch :disabled="!pushRegistrationInServer" :model-value="sendReadMessage" @update:model-value="onChangeSendReadMessage">
+				<template #label>{{ i18n.ts.sendPushNotificationReadMessage }}</template>
+				<template #caption>
+					<I18n :src="i18n.ts.sendPushNotificationReadMessageCaption">
+						<template #emptyPushNotificationMessage>{{ i18n.ts._notification.emptyPushNotificationMessage }}</template>
+					</I18n>
+				</template>
+			</MkSwitch>
+		</div>
+	</FormSection>
 </div>
 </template>
 
@@ -19,6 +34,11 @@ import * as os from '@/os';
 import { $i } from '@/account';
 import { i18n } from '@/i18n';
 import { definePageMetadata } from '@/scripts/page-metadata';
+import MkPushNotificationAllowButton from '@/components/MkPushNotificationAllowButton.vue';
+
+let allowButton = $shallowRef<InstanceType<typeof MkPushNotificationAllowButton>>();
+let pushRegistrationInServer = $computed(() => allowButton?.pushRegistrationInServer);
+let sendReadMessage = $computed(() => pushRegistrationInServer?.sendReadMessage || false);
 
 async function readAllUnreadNotes() {
 	await os.api('i/read-all-unread-notes');
@@ -49,6 +69,18 @@ function configure() {
 	}, 'closed');
 }
 
+function onChangeSendReadMessage(v: boolean) {
+	if (!pushRegistrationInServer) return;
+
+	os.apiWithDialog('sw/update-registration', {
+		endpoint: pushRegistrationInServer.endpoint,
+		sendReadMessage: v,
+	}).then(res => {
+		if (!allowButton)	return;
+		allowButton.pushRegistrationInServer = res;
+	});
+}
+
 const headerActions = $computed(() => []);
 
 const headerTabs = $computed(() => []);
diff --git a/packages/client/src/scripts/initialize-sw.ts b/packages/client/src/scripts/initialize-sw.ts
index 74f0e9b446..737f86515a 100644
--- a/packages/client/src/scripts/initialize-sw.ts
+++ b/packages/client/src/scripts/initialize-sw.ts
@@ -1,6 +1,3 @@
-import { instance } from "@/instance";
-import { $i } from "@/account";
-import { api } from "@/os";
 import { lang } from "@/config";
 
 export async function initializeSw() {
@@ -12,58 +9,5 @@ export async function initializeSw() {
 			msg: "initialize",
 			lang,
 		});
-
-		if (instance.swPublickey && "PushManager" in window && $i && $i.token) {
-			// SEE: https://developer.mozilla.org/en-US/docs/Web/API/PushManager/subscribe#Parameters
-			registration.pushManager
-				.subscribe({
-					userVisibleOnly: true,
-					applicationServerKey: urlBase64ToUint8Array(instance.swPublickey),
-				})
-				.then((subscription) => {
-					function encode(buffer: ArrayBuffer | null) {
-						return btoa(
-							String.fromCharCode.apply(null, new Uint8Array(buffer)),
-						);
-					}
-
-					// Register
-					api("sw/register", {
-						endpoint: subscription.endpoint,
-						auth: encode(subscription.getKey("auth")),
-						publickey: encode(subscription.getKey("p256dh")),
-					});
-				})
-				// When subscribe failed
-				.catch(async (err: Error) => {
-					// 通知が許可されていなかったとき
-					if (err.name === "NotAllowedError") {
-						return;
-					}
-
-					// 違うapplicationServerKey (または gcm_sender_id)のサブスクリプションが
-					// 既に存在していることが原因でエラーになった可能性があるので、
-					// そのサブスクリプションを解除しておく
-					const subscription = await registration.pushManager.getSubscription();
-					if (subscription) subscription.unsubscribe();
-				});
-		}
 	});
 }
-
-/**
- * Convert the URL safe base64 string to a Uint8Array
- * @param base64String base64 string
- */
-function urlBase64ToUint8Array(base64String: string): Uint8Array {
-	const padding = "=".repeat((4 - (base64String.length % 4)) % 4);
-	const base64 = (base64String + padding).replace(/-/g, "+").replace(/_/g, "/");
-
-	const rawData = window.atob(base64);
-	const outputArray = new Uint8Array(rawData.length);
-
-	for (let i = 0; i < rawData.length; ++i) {
-		outputArray[i] = rawData.charCodeAt(i);
-	}
-	return outputArray;
-}