diff --git a/packages/client/src/pages/messaging/messaging-room.form.vue b/packages/client/src/pages/messaging/messaging-room.form.vue
index 0b609e0581..f0d8c8666e 100644
--- a/packages/client/src/pages/messaging/messaging-room.form.vue
+++ b/packages/client/src/pages/messaging/messaging-room.form.vue
@@ -125,12 +125,21 @@ function onDrop(ev: DragEvent): void {
 
 function onKeydown(ev: KeyboardEvent) {
 	typing();
-	if ((ev.key === 'Enter') && (ev.ctrlKey || ev.metaKey)) {
-		textEl.value += '\n';
+	let sendOnEnter = localStorage.getItem('enterSendsMessage') === 'true' || defaultStore.state.enterSendsMessage;
+	if (sendOnEnter) {
+		if ((ev.key === 'Enter') && (ev.ctrlKey || ev.metaKey)) {
+			textEl.value += '\n';
+		}
+		else if (ev.key === 'Enter' && !ev.shiftKey && !('ontouchstart' in document.documentElement) && canSend) {
+			ev.preventDefault();
+			send();
+		}
 	}
-	else if (ev.key === 'Enter' && !ev.shiftKey && !('ontouchstart' in document.documentElement) && canSend) {
-		ev.preventDefault();
-		send();
+	else {
+		if ((ev.key === 'Enter') && (ev.ctrlKey || ev.metaKey) && canSend) {
+			ev.preventDefault();
+			send();
+		}
 	}
 }
 
diff --git a/packages/client/src/pages/settings/general.vue b/packages/client/src/pages/settings/general.vue
index 74fa0bc926..9c3f6b3d53 100644
--- a/packages/client/src/pages/settings/general.vue
+++ b/packages/client/src/pages/settings/general.vue
@@ -27,6 +27,7 @@
 		<FormSwitch v-model="imageNewTab" class="_formBlock">{{ i18n.ts.openImageInNewTab }}</FormSwitch>
 		<FormSwitch v-model="enableInfiniteScroll" class="_formBlock">{{ i18n.ts.enableInfiniteScroll }}</FormSwitch>
 		<FormSwitch v-model="useReactionPickerForContextMenu" class="_formBlock">{{ i18n.ts.useReactionPickerForContextMenu }}</FormSwitch>
+		<FormSwitch v-model="enterSendsMessage" class="_formBlock">{{ i18n.ts.enterSendsMessage }}</FormSwitch>
 		<FormSwitch v-model="disablePagesScript" class="_formBlock">{{ i18n.ts.disablePagesScript }}</FormSwitch>
 
 		<FormSelect v-model="serverDisconnectedBehavior" class="_formBlock">
@@ -140,6 +141,7 @@ const showFixedPostForm = computed(defaultStore.makeGetterSetter('showFixedPostF
 const numberOfPageCache = computed(defaultStore.makeGetterSetter('numberOfPageCache'));
 const instanceTicker = computed(defaultStore.makeGetterSetter('instanceTicker'));
 const enableInfiniteScroll = computed(defaultStore.makeGetterSetter('enableInfiniteScroll'));
+const enterSendsMessage = computed(defaultStore.makeGetterSetter('enterSendsMessage'));
 const useReactionPickerForContextMenu = computed(defaultStore.makeGetterSetter('useReactionPickerForContextMenu'));
 const squareAvatars = computed(defaultStore.makeGetterSetter('squareAvatars'));
 const aiChanMode = computed(defaultStore.makeGetterSetter('aiChanMode'));
@@ -170,6 +172,7 @@ watch([
 	fontSize,
 	useSystemFont,
 	enableInfiniteScroll,
+	enterSendsMessage,
 	squareAvatars,
 	aiChanMode,
 	showGapBetweenNotesInTimeline,
diff --git a/packages/client/src/store.ts b/packages/client/src/store.ts
index d87e05a4de..a3545c836c 100644
--- a/packages/client/src/store.ts
+++ b/packages/client/src/store.ts
@@ -251,6 +251,10 @@ export const defaultStore = markRaw(new Storage('base', {
 		where: 'device',
 		default: false,
 	},
+	enterSendsMessage: {
+		where: 'device',
+		default: false,
+	},
 }));
 
 // TODO: 他のタブと永続化されたstateを同期