diff --git a/locales/en-US.yml b/locales/en-US.yml
index dfe066af99..1583286ada 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -99,6 +99,7 @@ serverIsDead: "This server is not responding. Please wait for a while and try ag
 youShouldUpgradeClient: "To view this page, please refresh to update your client."
 enterListName: "Enter a name for the list"
 privacy: "Privacy"
+autoDeleteNotes: "Self-destructing notes"
 makeFollowManuallyApprove: "Follow requests require approval"
 defaultNoteVisibility: "Default visibility"
 follow: "Follow"
diff --git a/packages/backend/src/core/QueueService.ts b/packages/backend/src/core/QueueService.ts
index 103813acf2..96b52c33b4 100644
--- a/packages/backend/src/core/QueueService.ts
+++ b/packages/backend/src/core/QueueService.ts
@@ -69,6 +69,12 @@ export class QueueService {
 			repeat: { pattern: '*/5 * * * *' },
 			removeOnComplete: true,
 		});
+
+		this.systemQueue.add('autoDeleteNotes', {
+		}, {
+			repeat: { pattern: '*/5 * * * *' },
+			removeOnComplete: true,
+		});
 	}
 
 	@bindThis
diff --git a/packages/backend/src/queue/QueueProcessorModule.ts b/packages/backend/src/queue/QueueProcessorModule.ts
index d7316e19e3..593e1d4b2f 100644
--- a/packages/backend/src/queue/QueueProcessorModule.ts
+++ b/packages/backend/src/queue/QueueProcessorModule.ts
@@ -13,6 +13,7 @@ import { EndedPollNotificationProcessorService } from './processors/EndedPollNot
 import { InboxProcessorService } from './processors/InboxProcessorService.js';
 import { WebhookDeliverProcessorService } from './processors/WebhookDeliverProcessorService.js';
 import { CheckExpiredMutingsProcessorService } from './processors/CheckExpiredMutingsProcessorService.js';
+import { AutoDeleteNotesProcessorService } from './processors/AutoDeleteNotesProcessorService.js';
 import { CleanChartsProcessorService } from './processors/CleanChartsProcessorService.js';
 import { CleanProcessorService } from './processors/CleanProcessorService.js';
 import { CleanRemoteFilesProcessorService } from './processors/CleanRemoteFilesProcessorService.js';
@@ -52,6 +53,7 @@ import { RelationshipProcessorService } from './processors/RelationshipProcessor
 		ResyncChartsProcessorService,
 		CleanChartsProcessorService,
 		CheckExpiredMutingsProcessorService,
+		AutoDeleteNotesProcessorService,
 		CleanProcessorService,
 		DeleteDriveFilesProcessorService,
 		ExportAccountDataProcessorService,
diff --git a/packages/backend/src/queue/QueueProcessorService.ts b/packages/backend/src/queue/QueueProcessorService.ts
index 76b6d7fb05..d8f39dd5c4 100644
--- a/packages/backend/src/queue/QueueProcessorService.ts
+++ b/packages/backend/src/queue/QueueProcessorService.ts
@@ -38,6 +38,7 @@ import { TickChartsProcessorService } from './processors/TickChartsProcessorServ
 import { ResyncChartsProcessorService } from './processors/ResyncChartsProcessorService.js';
 import { CleanChartsProcessorService } from './processors/CleanChartsProcessorService.js';
 import { CheckExpiredMutingsProcessorService } from './processors/CheckExpiredMutingsProcessorService.js';
+import { AutoDeleteNotesProcessorService } from './processors/AutoDeleteNotesProcessorService.js';
 import { CleanProcessorService } from './processors/CleanProcessorService.js';
 import { AggregateRetentionProcessorService } from './processors/AggregateRetentionProcessorService.js';
 import { QueueLoggerService } from './QueueLoggerService.js';
@@ -118,6 +119,7 @@ export class QueueProcessorService implements OnApplicationShutdown {
 		private cleanChartsProcessorService: CleanChartsProcessorService,
 		private aggregateRetentionProcessorService: AggregateRetentionProcessorService,
 		private checkExpiredMutingsProcessorService: CheckExpiredMutingsProcessorService,
+		private autoDeleteNotesProcessorService: AutoDeleteNotesProcessorService,
 		private cleanProcessorService: CleanProcessorService,
 	) {
 		this.logger = this.queueLoggerService.logger;
@@ -146,6 +148,7 @@ export class QueueProcessorService implements OnApplicationShutdown {
 				case 'cleanCharts': return this.cleanChartsProcessorService.process();
 				case 'aggregateRetention': return this.aggregateRetentionProcessorService.process();
 				case 'checkExpiredMutings': return this.checkExpiredMutingsProcessorService.process();
+				case 'autoDeleteNotes': return this.autoDeleteNotesProcessorService.process();
 				case 'clean': return this.cleanProcessorService.process();
 				default: throw new Error(`unrecognized job type ${job.name} for system`);
 			}
diff --git a/packages/backend/src/queue/processors/AutoDeleteNotesProcessorService.ts b/packages/backend/src/queue/processors/AutoDeleteNotesProcessorService.ts
new file mode 100644
index 0000000000..c3a057c3b2
--- /dev/null
+++ b/packages/backend/src/queue/processors/AutoDeleteNotesProcessorService.ts
@@ -0,0 +1,77 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { In } from 'typeorm';
+import { DI } from '@/di-symbols.js';
+import type { UserProfilesRepository, NotesRepository } from '@/models/_.js';
+import type Logger from '@/logger.js';
+import { bindThis } from '@/decorators.js';
+import { NoteDeleteService } from '@/core/NoteDeleteService.js';
+import { IdService } from '@/core/IdService.js';
+import { QueueLoggerService } from '../QueueLoggerService.js';
+import type * as Bull from 'bullmq';
+
+@Injectable()
+export class AutoDeleteNotesProcessorService {
+	private logger: Logger;
+
+	constructor(
+		@Inject(DI.userProfilesRepository)
+		private userProfilesRepository: UserProfilesRepository,
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
+		@Inject(DI.userNotePiningsRepository)
+		private userNotePiningsRepository: UserNotePiningsRepository,
+
+		private idService: IdService,
+		private noteDeleteService: NoteDeleteService,
+		private queueLoggerService: QueueLoggerService,
+	) {
+		this.logger = this.queueLoggerService.logger.createSubLogger('auto-delete-notes');
+	}
+
+	@bindThis
+	public async process(): Promise<void> {
+		this.logger.info('Auto deleting old notes...');
+
+		const userProfiles = await this.userProfilesRepository.createQueryBuilder('user_profile')
+			.innerJoinAndSelect('user_profile.user', 'user')
+			.where('user.host IS NULL')
+			.andWhere('user_profile.autoDeleteNotes')
+			.getMany();
+
+		for (const userProfile of userProfiles) {
+			const user = userProfile.user;
+			this.logger.debug(`Deleting old notes of user @${user.username} (id ${user.id})`);
+			const untilTime = Date.now() - (userProfile.autoDeleteNotesMinutes * 1000 * 60);
+			const untilId = this.idService.gen(untilTime);
+
+			const pins = await this.userNotePiningsRepository.createQueryBuilder('user_note_pining')
+				.where('"userId" = :userId', { userId: user.id })
+				.getMany();
+
+			const pinnedNoteIds = pins.map((p) => p.noteId);
+
+			const notes = await this.notesRepository.createQueryBuilder('note')
+				.where('note."userId" = :userId', { userId: user.id })
+				.andWhere('note.id < :untilId', { untilId })
+				.andWhere('note.id NOT IN (SELECT "noteId" FROM note_favorite WHERE "userId" = :userId)')
+				.getMany();
+
+			for (const note of notes) {
+				if (pinnedNoteIds.includes(note.id)) {
+					this.logger.debug(`Skipping note ${note.id} as it is pinned`);
+					continue;
+				}
+
+				this.logger.debug(`Deleting note ${note.id}`);
+				await this.noteDeleteService.delete(user, note, false, user);
+			}
+		}
+
+		this.logger.succ('Done with note auto-delete');
+	}
+}
diff --git a/packages/frontend/src/pages/settings/privacy.autodelete.vue b/packages/frontend/src/pages/settings/privacy.autodelete.vue
new file mode 100644
index 0000000000..cec6da21d0
--- /dev/null
+++ b/packages/frontend/src/pages/settings/privacy.autodelete.vue
@@ -0,0 +1,66 @@
+<template>
+<div class="_gaps_m">
+	<MkButton :disabled="!changed" :primary="changed" @click="save()"><i class="ph-check ph-bold ph-lg"></i> {{ i18n.ts.save }}</MkButton>
+	<MkSwitch v-model="enable">
+		{{ i18n.ts.enable }}
+		<template #caption>When enabled, notes you post will automatically delete themselves if they are older than the given threshold age.</template>
+	</MkSwitch>
+	<MkInput v-model="threshold" type="number" :min="1">
+		<template #suffix>{{ i18n.ts._time.minute }}</template>
+		<template #caption>Note age threshold</template>
+	</MkInput>
+	<MkFolder>
+		<template #label>{{ i18n.ts.selectFromPresets }}</template>
+		<FormSplit :minWidth="100">
+			<MkButton @click="setThreshold(WEEK_MINUTES)" inline small>{{ i18n.ts.oneWeek }}</MkButton>
+			<MkButton @click="setThreshold(MONTH_MINUTES)" inline small>{{ i18n.ts.oneMonth }}</MkButton>
+			<MkButton @click="setThreshold(YEAR_MINUTES)" inline small>{{ i18n.ts.oneYear }}</MkButton>
+		</FormSplit>
+	</MkFolder>
+</div>
+</template>
+
+<script lang="ts" setup>
+import { ref, computed } from 'vue';
+import MkButton from '@/components/MkButton.vue';
+import MkInput from '@/components/MkInput.vue';
+import MkSwitch from '@/components/MkSwitch.vue';
+import FormSplit from '@/components/form/split.vue';
+import MkFolder from '@/components/MkFolder.vue';
+import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
+import { i18n } from '@/i18n.js';
+import { signinRequired } from '@/account.js';
+
+const $i = signinRequired();
+
+const enable = ref($i.autoDeleteNotes);
+const threshold = ref($i.autoDeleteNotesMinutes);
+
+const changed = computed(() => enable.value !== $i.autoDeleteNotes || threshold.value !== $i.autoDeleteNotesMinutes);
+
+const DAY_MINUTES = 60 * 24;
+const WEEK_MINUTES = 7 * DAY_MINUTES;
+const MONTH_MINUTES = 30 * DAY_MINUTES;
+const YEAR_MINUTES = 365 * DAY_MINUTES;
+
+function setThreshold(value) {
+	threshold.value = value;
+}
+
+async function save() {
+	if (enable.value) {
+		const { canceled } = await os.confirm({
+			type: 'warning',
+			text: 'This action may immediately delete notes older than the threshold value! Click ok to confirm.',
+		});
+
+		if (canceled) return;
+	}
+
+	misskeyApi('i/update', {
+		autoDeleteNotes: !!enable.value,
+		autoDeleteNotesMinutes: threshold.value,
+	});
+}
+</script>
diff --git a/packages/frontend/src/pages/settings/privacy.vue b/packages/frontend/src/pages/settings/privacy.vue
index 86cf5ab241..36f3319871 100644
--- a/packages/frontend/src/pages/settings/privacy.vue
+++ b/packages/frontend/src/pages/settings/privacy.vue
@@ -68,6 +68,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</FormSection>
 
 	<MkSwitch v-model="keepCw" @update:modelValue="save()">{{ i18n.ts.keepCw }}</MkSwitch>
+
+	<FormSection>
+		<div class="_gaps_m">
+			<MkFolder>
+				<template #label>{{ i18n.ts.autoDeleteNotes }}</template>
+				<XAutoDelete />
+			</MkFolder>
+		</div>
+	</FormSection>
 </div>
 </template>
 
@@ -82,6 +91,7 @@ import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { signinRequired } from '@/account.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
+import XAutoDelete from './privacy.autodelete.vue';
 
 const $i = signinRequired();