diff --git a/src/policies/MuteListPolicy.test.ts b/src/policies/MuteListPolicy.test.ts
new file mode 100644
index 00000000..69561f80
--- /dev/null
+++ b/src/policies/MuteListPolicy.test.ts
@@ -0,0 +1,72 @@
+import { MockRelay } from '@nostrify/nostrify/test';
+
+import { assertEquals } from '@/deps-test.ts';
+import { UserStore } from '@/storages/UserStore.ts';
+import { MuteListPolicy } from '@/policies/MuteListPolicy.ts';
+
+import userBlack from '~/fixtures/events/kind-0-black.json' with { type: 'json' };
+import userMe from '~/fixtures/events/event-0-makes-repost-with-quote-repost.json' with { type: 'json' };
+import blockEvent from '~/fixtures/events/kind-10000-black-blocks-user-me.json' with { type: 'json' };
+import event1authorUserMe from '~/fixtures/events/event-1-quote-repost-will-be-reposted.json' with { type: 'json' };
+import event1 from '~/fixtures/events/event-1.json' with { type: 'json' };
+
+Deno.test('block event: muted user cannot post', async () => {
+  const userBlackCopy = structuredClone(userBlack);
+  const userMeCopy = structuredClone(userMe);
+  const blockEventCopy = structuredClone(blockEvent);
+  const event1authorUserMeCopy = structuredClone(event1authorUserMe);
+
+  const db = new MockRelay();
+
+  const store = new UserStore(userBlackCopy.pubkey, db);
+  const policy = new MuteListPolicy(userBlack.pubkey, db);
+
+  await store.event(blockEventCopy);
+  await store.event(userBlackCopy);
+  await store.event(userMeCopy);
+
+  const ok = await policy.call(event1authorUserMeCopy);
+
+  assertEquals(ok, ['OK', event1authorUserMeCopy.id, false, 'You are banned in this server.']);
+});
+
+Deno.test('allow event: user is NOT muted because there is no muted event', async () => {
+  const userBlackCopy = structuredClone(userBlack);
+  const userMeCopy = structuredClone(userMe);
+  const event1authorUserMeCopy = structuredClone(event1authorUserMe);
+
+  const db = new MockRelay();
+
+  const store = new UserStore(userBlackCopy.pubkey, db);
+  const policy = new MuteListPolicy(userBlack.pubkey, db);
+
+  await store.event(userBlackCopy);
+  await store.event(userMeCopy);
+
+  const ok = await policy.call(event1authorUserMeCopy);
+
+  assertEquals(ok, ['OK', event1authorUserMeCopy.id, true, '']);
+});
+
+Deno.test('allow event: user is NOT muted because he is not in mute event', async () => {
+  const userBlackCopy = structuredClone(userBlack);
+  const userMeCopy = structuredClone(userMe);
+  const event1authorUserMeCopy = structuredClone(event1authorUserMe);
+  const blockEventCopy = structuredClone(blockEvent);
+  const event1copy = structuredClone(event1);
+
+  const db = new MockRelay();
+
+  const store = new UserStore(userBlackCopy.pubkey, db);
+  const policy = new MuteListPolicy(userBlack.pubkey, db);
+
+  await store.event(userBlackCopy);
+  await store.event(blockEventCopy);
+  await store.event(userMeCopy);
+  await store.event(event1copy);
+  await store.event(event1authorUserMeCopy);
+
+  const ok = await policy.call(event1copy);
+
+  assertEquals(ok, ['OK', event1.id, true, '']);
+});
diff --git a/src/policies/MuteListPolicy.ts b/src/policies/MuteListPolicy.ts
new file mode 100644
index 00000000..1db85566
--- /dev/null
+++ b/src/policies/MuteListPolicy.ts
@@ -0,0 +1,18 @@
+import { NostrEvent, NostrRelayOK, NPolicy, NStore } from '@nostrify/nostrify';
+
+import { getTagSet } from '@/tags.ts';
+
+export class MuteListPolicy implements NPolicy {
+  constructor(private pubkey: string, private store: NStore) {}
+
+  async call(event: NostrEvent): Promise<NostrRelayOK> {
+    const [muteList] = await this.store.query([{ authors: [this.pubkey], kinds: [10000], limit: 1 }]);
+    const pubkeys = getTagSet(muteList?.tags ?? [], 'p');
+
+    if (pubkeys.has(event.pubkey)) {
+      return ['OK', event.id, false, 'You are banned in this server.'];
+    }
+
+    return ['OK', event.id, true, ''];
+  }
+}
diff --git a/src/storages/UserStore.test.ts b/src/storages/UserStore.test.ts
index 11f96cbd..b1955bd9 100644
--- a/src/storages/UserStore.test.ts
+++ b/src/storages/UserStore.test.ts
@@ -8,7 +8,7 @@ import userMe from '~/fixtures/events/event-0-makes-repost-with-quote-repost.jso
 import blockEvent from '~/fixtures/events/kind-10000-black-blocks-user-me.json' with { type: 'json' };
 import event1authorUserMe from '~/fixtures/events/event-1-quote-repost-will-be-reposted.json' with { type: 'json' };
 
-Deno.test('query events of users that are not blocked', async () => {
+Deno.test('query events of users that are not muted', async () => {
   const userBlackCopy = structuredClone(userBlack);
   const userMeCopy = structuredClone(userMe);
   const blockEventCopy = structuredClone(blockEvent);
@@ -25,3 +25,17 @@ Deno.test('query events of users that are not blocked', async () => {
 
   assertEquals(await store.query([{ kinds: [1] }], { limit: 1 }), []);
 });
+
+Deno.test('user never muted anyone', async () => {
+  const userBlackCopy = structuredClone(userBlack);
+  const userMeCopy = structuredClone(userMe);
+
+  const db = new MockRelay();
+
+  const store = new UserStore(userBlackCopy.pubkey, db);
+
+  await store.event(userBlackCopy);
+  await store.event(userMeCopy);
+
+  assertEquals(await store.query([{ kinds: [0], authors: [userMeCopy.pubkey] }], { limit: 1 }), [userMeCopy]);
+});
diff --git a/src/storages/UserStore.ts b/src/storages/UserStore.ts
index a3f0726c..1c7aaee2 100644
--- a/src/storages/UserStore.ts
+++ b/src/storages/UserStore.ts
@@ -1,4 +1,5 @@
 import { NostrEvent, NostrFilter, NStore } from '@nostrify/nostrify';
+
 import { DittoEvent } from '@/interfaces/DittoEvent.ts';
 import { getTagSet } from '@/tags.ts';
 
@@ -16,17 +17,13 @@ export class UserStore implements NStore {
   }
 
   /**
-   * Query events that `pubkey` did not block
+   * Query events that `pubkey` did not mute
    * https://github.com/nostr-protocol/nips/blob/master/51.md#standard-lists
    */
   async query(filters: NostrFilter[], opts: { signal?: AbortSignal; limit?: number } = {}): Promise<DittoEvent[]> {
     const allEvents = await this.store.query(filters, opts);
 
-    const mutedPubkeysEvent = await this.getMuteList();
-    if (!mutedPubkeysEvent) {
-      return allEvents;
-    }
-    const mutedPubkeys = getTagSet(mutedPubkeysEvent.tags, 'p');
+    const mutedPubkeys = await this.getMutedPubkeys();
 
     return allEvents.filter((event) => {
       return event.kind === 0 || mutedPubkeys.has(event.pubkey) === false;
@@ -37,4 +34,12 @@ export class UserStore implements NStore {
     const [muteList] = await this.store.query([{ authors: [this.pubkey], kinds: [10000], limit: 1 }]);
     return muteList;
   }
+
+  private async getMutedPubkeys(): Promise<Set<string>> {
+    const mutedPubkeysEvent = await this.getMuteList();
+    if (!mutedPubkeysEvent) {
+      return new Set();
+    }
+    return getTagSet(mutedPubkeysEvent.tags, 'p');
+  }
 }