diff --git a/src/main/ipc/inboxApi.ts b/src/main/ipc/inboxApi.ts
index 7f617c7..79f3cdb 100644
--- a/src/main/ipc/inboxApi.ts
+++ b/src/main/ipc/inboxApi.ts
@@ -153,8 +153,8 @@ export function registerInboxApi(deps: InboxIpcDeps): void {
   ipcMain.handle('inbox:listRecallCandidate', () => deps.capture.listRecallCandidate());
   ipcMain.handle('inbox:markRecallOpened', (_e, id: string) => deps.capture.markRecallOpened(id));
   ipcMain.handle('inbox:dismissRecall', (_e, id: string) => deps.capture.dismissRecall(id));
-  ipcMain.handle('inbox:emitRecallShown', (_e, id: string) => deps.capture.emitRecallShown(id));
-  ipcMain.handle('inbox:emitRecallSnoozed', (_e, id: string) => deps.capture.emitRecallSnoozed(id));
+  ipcMain.on('inbox:emitRecallShown', (_e, id: string) => { void deps.capture.emitRecallShown(id); });
+  ipcMain.on('inbox:emitRecallSnoozed', (_e, id: string) => { void deps.capture.emitRecallSnoozed(id); });
 
   ipcMain.handle('inbox:loadOllamaSettings', async () => {
     const s = await deps.settings.load();
diff --git a/src/preload/index.ts b/src/preload/index.ts
index 0d64c2a..ce7be91 100644
--- a/src/preload/index.ts
+++ b/src/preload/index.ts
@@ -43,8 +43,8 @@ const api: InklingApi = {
     listRecallCandidate: () => ipcRenderer.invoke('inbox:listRecallCandidate'),
     markRecallOpened: (id: string) => ipcRenderer.invoke('inbox:markRecallOpened', id),
     dismissRecall: (id: string) => ipcRenderer.invoke('inbox:dismissRecall', id),
-    emitRecallShown: (id: string) => ipcRenderer.invoke('inbox:emitRecallShown', id),
-    emitRecallSnoozed: (id: string) => ipcRenderer.invoke('inbox:emitRecallSnoozed', id),
+    emitRecallShown: (id: string) => { ipcRenderer.send('inbox:emitRecallShown', id); },
+    emitRecallSnoozed: (id: string) => { ipcRenderer.send('inbox:emitRecallSnoozed', id); },
     loadOllamaSettings: () => ipcRenderer.invoke('inbox:loadOllamaSettings'),
     saveOllamaSettings: (v: { endpoint: string; model: string }) => ipcRenderer.invoke('inbox:saveOllamaSettings', v),
     // v0.2.7 Task 13 — 외부 (트레이) 에서 view 전환 요청 listener.
diff --git a/src/renderer/inbox/store.ts b/src/renderer/inbox/store.ts
index 6a9979a..10b1ff3 100644
--- a/src/renderer/inbox/store.ts
+++ b/src/renderer/inbox/store.ts
@@ -280,7 +280,7 @@ export const useInbox = create<InboxState>((set, get) => ({
     // snooze 는 적용하되 emit 만 skip. telemetry 누락 받아들임 (의도적).
     const candidate = get().recallCandidate;
     if (candidate) {
-      await inboxApi.emitRecallSnoozed(candidate.id);
+      inboxApi.emitRecallSnoozed(candidate.id);
     }
   },
   // v0.2.11 Cut D — FTS5 search + review aggregate actions.
diff --git a/src/shared/types.ts b/src/shared/types.ts
index 3c6270a..848b14a 100644
--- a/src/shared/types.ts
+++ b/src/shared/types.ts
@@ -152,8 +152,8 @@ export interface InboxApi {
   listRecallCandidate(): Promise<Note | null>;
   markRecallOpened(id: string): Promise<{ note: Note }>;
   dismissRecall(id: string): Promise<{ note: Note }>;
-  emitRecallShown(id: string): Promise<void>;
-  emitRecallSnoozed(id: string): Promise<void>;
+  emitRecallShown(id: string): void;
+  emitRecallSnoozed(id: string): void;
   loadOllamaSettings(): Promise<{ endpoint: string; model: string } | null>;
   saveOllamaSettings(v: { endpoint: string; model: string }): Promise<{ ok: true } | { ok: false; reason: string }>;
   // v0.2.7 Task 13 — 외부 (트레이 등) 에서 view 전환 요청 구독.
diff --git a/tests/unit/inboxApi-openMedia.test.ts b/tests/unit/inboxApi-openMedia.test.ts
index 0625653..9e4d00f 100644
--- a/tests/unit/inboxApi-openMedia.test.ts
+++ b/tests/unit/inboxApi-openMedia.test.ts
@@ -11,7 +11,8 @@ vi.mock('electron', () => ({
     ipcMain: {
       handle: (ch: string, fn: (...args: unknown[]) => unknown) => {
         handlers[ch] = fn;
-      }
+      },
+      on: (_ch: string, _fn: unknown) => {}
     },
     dialog: {},
     shell: { openPath: mockOpenPath }
diff --git a/tests/unit/inboxApi-revisions.test.ts b/tests/unit/inboxApi-revisions.test.ts
index 9675dfb..5e7fd3f 100644
--- a/tests/unit/inboxApi-revisions.test.ts
+++ b/tests/unit/inboxApi-revisions.test.ts
@@ -2,7 +2,7 @@ import { describe, it, expect, beforeEach, vi } from 'vitest';
 
 vi.mock('electron', () => ({
   default: {
-    ipcMain: { handle: vi.fn() }
+    ipcMain: { handle: vi.fn(), on: vi.fn() }
   }
 }));
 
diff --git a/tests/unit/inboxApi-search-review.test.ts b/tests/unit/inboxApi-search-review.test.ts
index b318c32..138f0cb 100644
--- a/tests/unit/inboxApi-search-review.test.ts
+++ b/tests/unit/inboxApi-search-review.test.ts
@@ -1,6 +1,6 @@
 import { describe, it, expect, beforeEach, vi } from 'vitest';
 
-vi.mock('electron', () => ({ default: { ipcMain: { handle: vi.fn() } } }));
+vi.mock('electron', () => ({ default: { ipcMain: { handle: vi.fn(), on: vi.fn() } } }));
 import electron from 'electron';
 import { registerInboxApi } from '../../src/main/ipc/inboxApi.js';
 import type { InboxIpcDeps } from '../../src/main/ipc/inboxApi.js';
diff --git a/tests/unit/inboxApi-setStatus.test.ts b/tests/unit/inboxApi-setStatus.test.ts
index 8d69755..bba5969 100644
--- a/tests/unit/inboxApi-setStatus.test.ts
+++ b/tests/unit/inboxApi-setStatus.test.ts
@@ -12,7 +12,8 @@ vi.mock('electron', () => ({
     ipcMain: {
       handle: (ch: string, fn: (...args: unknown[]) => unknown) => {
         handlers[ch] = fn;
-      }
+      },
+      on: (_ch: string, _fn: unknown) => {}
     },
     dialog: {},
     shell: {}
diff --git a/tests/unit/recall-ipc.test.ts b/tests/unit/recall-ipc.test.ts
new file mode 100644
index 0000000..163d0ed
--- /dev/null
+++ b/tests/unit/recall-ipc.test.ts
@@ -0,0 +1,65 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+
+// Track ipcMain.handle and ipcMain.on calls
+const { handleCalls, onCalls } = vi.hoisted(() => ({
+  handleCalls: [] as string[],
+  onCalls: [] as string[]
+}));
+
+vi.mock('electron', () => ({
+  default: {
+    ipcMain: {
+      handle: (ch: string, _fn: unknown) => { handleCalls.push(ch); },
+      on: (ch: string, _fn: unknown) => { onCalls.push(ch); }
+    },
+    dialog: {},
+    shell: {}
+  }
+}));
+
+import { registerInboxApi } from '../../src/main/ipc/inboxApi.js';
+import type { InboxIpcDeps } from '../../src/main/ipc/inboxApi.js';
+
+function makeDeps(): InboxIpcDeps {
+  return {
+    repo: {} as never,
+    continuity: {} as never,
+    capture: {
+      emitRecallShown: vi.fn(async () => {}),
+      emitRecallSnoozed: vi.fn(async () => {})
+    } as never,
+    health: {} as never,
+    intent: {} as never,
+    getInboxWindow: () => null,
+    settings: {} as never,
+    providerHolder: {} as never,
+    paths: { profileDir: '/profile' }
+  };
+}
+
+describe('recall IPC channels (fire-and-forget)', () => {
+  beforeEach(() => {
+    handleCalls.length = 0;
+    onCalls.length = 0;
+  });
+
+  it('inbox:emitRecallShown is registered with ipcMain.on (not handle)', () => {
+    registerInboxApi(makeDeps());
+    expect(onCalls).toContain('inbox:emitRecallShown');
+    expect(handleCalls).not.toContain('inbox:emitRecallShown');
+  });
+
+  it('inbox:emitRecallSnoozed is registered with ipcMain.on (not handle)', () => {
+    registerInboxApi(makeDeps());
+    expect(onCalls).toContain('inbox:emitRecallSnoozed');
+    expect(handleCalls).not.toContain('inbox:emitRecallSnoozed');
+  });
+
+  it('each recall channel is registered exactly once with ipcMain.on', () => {
+    registerInboxApi(makeDeps());
+    const shownCount = onCalls.filter((ch) => ch === 'inbox:emitRecallShown').length;
+    const snoozedCount = onCalls.filter((ch) => ch === 'inbox:emitRecallSnoozed').length;
+    expect(shownCount).toBe(1);
+    expect(snoozedCount).toBe(1);
+  });
+});