diff --git a/src/app/mail/index.ts b/src/app/mail/index.ts
index be7199f7..0f8b6a99 100644
--- a/src/app/mail/index.ts
+++ b/src/app/mail/index.ts
@@ -1,4 +1,4 @@
-import {hash, maybe} from "@welshman/lib"
+import {hash, maybe, throttle} from "@welshman/lib"
 import type {Filter} from "@welshman/util"
 import {Address, DELETE, makeEvent, makeHttpAuth, makeHttpAuthHeader} from "@welshman/util"
 import {Relays, User} from "@welshman/app"
@@ -6,6 +6,7 @@ import {buildUrl} from "@lib/util"
 import {app, thunks} from "@app/core"
 import {device} from "@app/device"
 import {EMAIL_NOTIFICATION_SERVER, PUSH_BRIDGE} from "@app/env"
+import {userSettingsValues} from "@app/settings"
 import {emailNotificationState, syncRelaySubscriptions} from "@app/push/adapters/common"
 
 export class MailNotifications {
@@ -119,6 +120,32 @@ export class MailNotifications {
     await this.unregister()
   }
 
+  sync() {
+    return userSettingsValues.subscribe(
+      throttle(500, async ({email, emailAddress, emailFrequency}) => {
+        const current = emailNotificationState.get()
+
+        if (email && emailAddress) {
+          if (
+            !current.callback ||
+            current.email !== emailAddress ||
+            current.frequency !== emailFrequency
+          ) {
+            try {
+              await this.register(emailAddress, emailFrequency)
+            } catch {
+              return
+            }
+          }
+
+          await this.enable()
+        } else {
+          await this.disable()
+        }
+      }),
+    )
+  }
+
   _getSubscriptionIdentifier = (relay: string, key: string) =>
     String(hash(relay + key + device.get() + "email"))
 
diff --git a/src/app/settings.ts b/src/app/settings.ts
index fa342dca..0d7c8b91 100644
--- a/src/app/settings.ts
+++ b/src/app/settings.ts
@@ -31,6 +31,9 @@ export type SettingsValues = {
   font_size: number
   alerts: SpaceNotificationSettings[]
   zap_amounts: number[]
+  email: boolean
+  emailAddress: string
+  emailFrequency: string
 }
 
 export const defaultSettings: SettingsValues = {
@@ -43,6 +46,9 @@ export const defaultSettings: SettingsValues = {
   font_size: 1.1,
   alerts: [],
   zap_amounts: [21, 210, 2100, 21000],
+  email: false,
+  emailAddress: "",
+  emailFrequency: "daily",
 }
 
 export class Settings extends DerivedPlugin<AppDataReader> {
@@ -97,9 +103,6 @@ export const notificationSettings = withGetter(
     spaces: true,
     mentions: true,
     messages: true,
-    email: false,
-    emailFrequency: "daily",
-    emailAddress: "",
   }),
 )
 
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 417e0b8c..6055ab41 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -43,6 +43,7 @@
     latestActivityByPath,
   } from "@app/notifications"
   import {Push} from "@app/push"
+  import {Mail} from "@app/mail"
   import {onPushNotificationAction, pushState} from "@app/push/adapters/common"
   import {syncKeyboard} from "@app/keyboard"
   import {syncCallAudioResume} from "@app/call"
@@ -212,6 +213,9 @@
     // Initialize background notifications
     unsubscribers.push(Push.sync())
 
+    // Sync email notification prefs across devices and register this device
+    unsubscribers.push(Mail.sync())
+
     // Logging in swaps in a fresh app — its policies rebind themselves, we just have to sync
     // application data against the new identity's relays. Wait for the new app's storage to
     // load the way startup does, so sync reconciles against cached events.
diff --git a/src/routes/settings/alerts/+page.svelte b/src/routes/settings/alerts/+page.svelte
index 57432257..dc2e27e9 100644
--- a/src/routes/settings/alerts/+page.svelte
+++ b/src/routes/settings/alerts/+page.svelte
@@ -15,7 +15,7 @@
   import {clearBadges} from "@app/notifications"
   import {Push} from "@app/push"
   import {Mail} from "@app/mail"
-  import {notificationSettings} from "@app/settings"
+  import {notificationSettings, publishSettings, userSettingsValues} from "@app/settings"
   import {emailNotificationState} from "@app/push/adapters/common"
 
   const clearError = () => {
@@ -24,8 +24,24 @@
     }
   }
 
+  const buildSettings = () => {
+    const local = notificationSettings.get()
+
+    return {
+      push: local.push,
+      sound: local.sound,
+      badge: local.badge,
+      spaces: local.spaces,
+      mentions: local.mentions,
+      messages: local.messages,
+      email: $userSettingsValues.email,
+      emailAddress: $userSettingsValues.emailAddress,
+      emailFrequency: $userSettingsValues.emailFrequency,
+    }
+  }
+
   const reset = () => {
-    settings = {...notificationSettings.get()}
+    settings = buildSettings()
     clearError()
   }
 
@@ -73,7 +89,21 @@
         await Mail.disable()
       }
 
-      notificationSettings.set(settings)
+      // Sync email prefs across devices via AppData
+      await publishSettings({
+        email: settings.email,
+        emailAddress: settings.emailAddress,
+        emailFrequency: settings.emailFrequency,
+      })
+
+      notificationSettings.set({
+        push: settings.push,
+        sound: settings.sound,
+        badge: settings.badge,
+        spaces: settings.spaces,
+        mentions: settings.mentions,
+        messages: settings.messages,
+      })
 
       pushToast({message: "Your settings have been saved!"})
     } finally {
@@ -82,7 +112,7 @@
   })
 
   let loading = $state(false)
-  let settings = $state({...notificationSettings.get()})
+  let settings = $state(buildSettings())
 </script>
 
 <form {onsubmit}>