diff --git a/package.json b/package.json
index b5ece4501e..58aeb36352 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,7 @@
     "cropperjs": "1.5.12",
     "diff": "3.5.0",
     "escape-html": "1.0.3",
+    "js-cookie": "^3.0.1",
     "localforage": "1.10.0",
     "parse-link-header": "1.0.1",
     "phoenix": "1.6.2",
diff --git a/src/components/interface_language_switcher/interface_language_switcher.vue b/src/components/interface_language_switcher/interface_language_switcher.vue
index 6d1f83c436..7ad1fe2e48 100644
--- a/src/components/interface_language_switcher/interface_language_switcher.vue
+++ b/src/components/interface_language_switcher/interface_language_switcher.vue
@@ -1,12 +1,12 @@
 <template>
   <div>
     <label for="interface-language-switcher">
-      {{ $t('settings.interfaceLanguage') }}
+      {{ promptText }}
     </label>
     {{ ' ' }}
     <Select
       id="interface-language-switcher"
-      v-model="language"
+      v-model="controlledLanguage"
     >
       <option
         v-for="lang in languages"
@@ -20,39 +20,43 @@
 </template>
 
 <script>
-import languagesObject from '../../i18n/messages'
 import localeService from '../../services/locale/locale.service.js'
-import ISO6391 from 'iso-639-1'
-import _ from 'lodash'
 import Select from '../select/select.vue'
 
 export default {
   components: {
     Select
   },
+  props: {
+    promptText: {
+      type: String,
+      required: true
+    },
+    language: {
+      type: String,
+      required: true
+    },
+    setLanguage: {
+      type: Function,
+      required: true
+    }
+  },
   computed: {
     languages () {
-      return _.map(languagesObject.languages, (code) => ({ code: code, name: this.getLanguageName(code) })).sort((a, b) => a.name.localeCompare(b.name))
+      return localeService.languages
     },
 
-    language: {
-      get: function () { return this.$store.getters.mergedConfig.interfaceLanguage },
+    controlledLanguage: {
+      get: function () { return this.language },
       set: function (val) {
-        this.$store.dispatch('setOption', { name: 'interfaceLanguage', value: val })
+        this.setLanguage(val)
       }
     }
   },
 
   methods: {
     getLanguageName (code) {
-      const specialLanguageNames = {
-        'ja_easy': 'やさしいにほんご',
-        'zh': '简体中文',
-        'zh_Hant': '繁體中文'
-      }
-      const languageName = specialLanguageNames[code] || ISO6391.getNativeName(code)
-      const browserLocale = localeService.internalToBrowserLocale(code)
-      return languageName.charAt(0).toLocaleUpperCase(browserLocale) + languageName.slice(1)
+      return localeService.getLanguageName(code)
     }
   }
 }
diff --git a/src/components/registration/registration.js b/src/components/registration/registration.js
index a3ef0f0496..6eb316d096 100644
--- a/src/components/registration/registration.js
+++ b/src/components/registration/registration.js
@@ -1,6 +1,8 @@
 import useVuelidate from '@vuelidate/core'
 import { required, requiredIf, sameAs } from '@vuelidate/validators'
 import { mapActions, mapState } from 'vuex'
+import InterfaceLanguageSwitcher from '../interface_language_switcher/interface_language_switcher.vue'
+import localeService from '../../services/locale/locale.service.js'
 
 const registration = {
   setup () { return { v$: useVuelidate() } },
@@ -11,10 +13,14 @@ const registration = {
       username: '',
       password: '',
       confirm: '',
-      reason: ''
+      reason: '',
+      language: ''
     },
     captcha: {}
   }),
+  components: {
+    InterfaceLanguageSwitcher
+  },
   validations () {
     return {
       user: {
@@ -26,7 +32,8 @@ const registration = {
           required,
           sameAs: sameAs(this.user.password)
         },
-        reason: { required: requiredIf(() => this.accountApprovalRequired) }
+        reason: { required: requiredIf(() => this.accountApprovalRequired) },
+        language: {}
       }
     }
   },
@@ -64,6 +71,9 @@ const registration = {
       this.user.captcha_solution = this.captcha.solution
       this.user.captcha_token = this.captcha.token
       this.user.captcha_answer_data = this.captcha.answer_data
+      if (this.user.language) {
+        this.user.language = localeService.internalToBackendLocale(this.user.language)
+      }
 
       this.v$.$touch()
 
diff --git a/src/components/registration/registration.vue b/src/components/registration/registration.vue
index 3d40910955..6fa70a0978 100644
--- a/src/components/registration/registration.vue
+++ b/src/components/registration/registration.vue
@@ -162,6 +162,18 @@
               </ul>
             </div>
 
+            <div
+              class="form-group"
+              :class="{ 'form-group--error': $v.user.language.$error }"
+            >
+              <interface-language-switcher
+                for="email-language"
+                :prompt-text="$t('registration.email_language')"
+                :language="$v.user.language.$model"
+                :set-language="val => $v.user.language.$model = val"
+              />
+            </div>
+
             <div
               v-if="accountApprovalRequired"
               class="form-group"
diff --git a/src/components/settings_modal/tabs/general_tab.js b/src/components/settings_modal/tabs/general_tab.js
index 62d86176d4..de925155c5 100644
--- a/src/components/settings_modal/tabs/general_tab.js
+++ b/src/components/settings_modal/tabs/general_tab.js
@@ -72,6 +72,12 @@ const GeneralTab = {
         !this.$store.state.users.currentUser.background_image
     },
     instanceShoutboxPresent () { return this.$store.state.instance.shoutAvailable },
+    language: {
+      get: function () { return this.$store.getters.mergedConfig.interfaceLanguage },
+      set: function (val) {
+        this.$store.dispatch('setOption', { name: 'interfaceLanguage', value: val })
+      }
+    },
     ...SharedComputedObject()
   },
   methods: {
diff --git a/src/components/settings_modal/tabs/general_tab.vue b/src/components/settings_modal/tabs/general_tab.vue
index a2c6bffa51..39149d7f7c 100644
--- a/src/components/settings_modal/tabs/general_tab.vue
+++ b/src/components/settings_modal/tabs/general_tab.vue
@@ -4,7 +4,11 @@
       <h2>{{ $t('settings.interface') }}</h2>
       <ul class="setting-list">
         <li>
-          <interface-language-switcher />
+          <interface-language-switcher
+            :prompt-text="$t('settings.interfaceLanguage')"
+            :language="language"
+            :set-language="val => language = val"
+          />
         </li>
         <li v-if="instanceSpecificPanelPresent">
           <BooleanSetting path="hideISP">
diff --git a/src/components/settings_modal/tabs/profile_tab.js b/src/components/settings_modal/tabs/profile_tab.js
index f2b48b4ba3..8781bb917c 100644
--- a/src/components/settings_modal/tabs/profile_tab.js
+++ b/src/components/settings_modal/tabs/profile_tab.js
@@ -8,8 +8,10 @@ import EmojiInput from 'src/components/emoji_input/emoji_input.vue'
 import suggestor from 'src/components/emoji_input/suggestor.js'
 import Autosuggest from 'src/components/autosuggest/autosuggest.vue'
 import Checkbox from 'src/components/checkbox/checkbox.vue'
+import InterfaceLanguageSwitcher from 'src/components/interface_language_switcher/interface_language_switcher.vue'
 import BooleanSetting from '../helpers/boolean_setting.vue'
 import SharedComputedObject from '../helpers/shared_computed_object.js'
+import localeService from 'src/services/locale/locale.service.js'
 
 import { library } from '@fortawesome/fontawesome-svg-core'
 import {
@@ -40,7 +42,8 @@ const ProfileTab = {
       banner: null,
       bannerPreview: null,
       background: null,
-      backgroundPreview: null
+      backgroundPreview: null,
+      emailLanguage: this.$store.state.users.currentUser.language || ''
     }
   },
   components: {
@@ -50,7 +53,8 @@ const ProfileTab = {
     Autosuggest,
     ProgressButton,
     Checkbox,
-    BooleanSetting
+    BooleanSetting,
+    InterfaceLanguageSwitcher
   },
   computed: {
     user () {
@@ -111,19 +115,25 @@ const ProfileTab = {
   },
   methods: {
     updateProfile () {
+      const params = {
+        note: this.newBio,
+        locked: this.newLocked,
+        // Backend notation.
+        /* eslint-disable camelcase */
+        display_name: this.newName,
+        fields_attributes: this.newFields.filter(el => el != null),
+        bot: this.bot,
+        show_role: this.showRole
+        /* eslint-enable camelcase */
+      }
+
+      if (this.emailLanguage) {
+        params.language = localeService.internalToBackendLocale(this.emailLanguage)
+      }
+
       this.$store.state.api.backendInteractor
-        .updateProfile({
-          params: {
-            note: this.newBio,
-            locked: this.newLocked,
-            // Backend notation.
-            /* eslint-disable camelcase */
-            display_name: this.newName,
-            fields_attributes: this.newFields.filter(el => el != null),
-            bot: this.bot,
-            show_role: this.showRole
-            /* eslint-enable camelcase */
-          } }).then((user) => {
+        .updateProfile({ params })
+        .then((user) => {
           this.newFields.splice(user.fields.length)
           merge(this.newFields, user.fields)
           this.$store.commit('addNewUsers', [user])
diff --git a/src/components/settings_modal/tabs/profile_tab.vue b/src/components/settings_modal/tabs/profile_tab.vue
index 881016fbdf..4cd9377223 100644
--- a/src/components/settings_modal/tabs/profile_tab.vue
+++ b/src/components/settings_modal/tabs/profile_tab.vue
@@ -89,6 +89,13 @@
           {{ $t('settings.bot') }}
         </Checkbox>
       </p>
+      <p>
+        <interface-language-switcher
+          :prompt-text="$t('settings.email_language')"
+          :language="emailLanguage"
+          :set-language="val => emailLanguage = val"
+        />
+      </p>
       <button
         :disabled="newName && newName.length === 0"
         class="btn button-default"
diff --git a/src/i18n/en.json b/src/i18n/en.json
index 733df0a0aa..a317449242 100644
--- a/src/i18n/en.json
+++ b/src/i18n/en.json
@@ -255,7 +255,8 @@
       "password_required": "cannot be left blank",
       "password_confirmation_required": "cannot be left blank",
       "password_confirmation_match": "should be the same as password"
-    }
+    },
+    "email_language": "In which language do you want to receive emails from the server?"
   },
   "remote_user_resolver": {
     "remote_user_resolver": "Remote user resolver",
@@ -304,6 +305,7 @@
     "avatarRadius": "Avatars",
     "background": "Background",
     "bio": "Bio",
+    "email_language": "Language for receiving emails from the server",
     "block_export": "Block export",
     "block_export_button": "Export your blocks to a csv file",
     "block_import": "Block import",
diff --git a/src/modules/config.js b/src/modules/config.js
index 13f1045b7e..e04013394a 100644
--- a/src/modules/config.js
+++ b/src/modules/config.js
@@ -1,5 +1,9 @@
+import Cookies from 'js-cookie'
 import { setPreset, applyTheme } from '../services/style_setter/style_setter.js'
 import messages from '../i18n/messages'
+import localeService from '../services/locale/locale.service.js'
+
+const BACKEND_LANGUAGE_COOKIE_NAME = 'userLanguage'
 
 const browserLocale = (window.navigator.language || 'en').split('-')[0]
 
@@ -163,6 +167,7 @@ const config = {
           break
         case 'interfaceLanguage':
           messages.setLanguage(this.getters.i18n, value)
+          Cookies.set(BACKEND_LANGUAGE_COOKIE_NAME, localeService.internalToBackendLocale(value))
           break
       }
     }
diff --git a/src/services/api/api.service.js b/src/services/api/api.service.js
index 50fa3d507e..ca84ba2cf7 100644
--- a/src/services/api/api.service.js
+++ b/src/services/api/api.service.js
@@ -197,6 +197,7 @@ const updateProfile = ({ credentials, params }) => {
 // homepage
 // location
 // token
+// language
 const register = ({ params, credentials }) => {
   const { nickname, ...rest } = params
   return fetch(MASTODON_REGISTRATION_URL, {
diff --git a/src/services/locale/locale.service.js b/src/services/locale/locale.service.js
index 5be99d81f4..8cef252219 100644
--- a/src/services/locale/locale.service.js
+++ b/src/services/locale/locale.service.js
@@ -1,12 +1,35 @@
+import languagesObject from '../../i18n/messages'
+import ISO6391 from 'iso-639-1'
+import _ from 'lodash'
+
 const specialLanguageCodes = {
   'ja_easy': 'ja',
-  'zh_Hant': 'zh-HANT'
+  'zh_Hant': 'zh-HANT',
+  'zh': 'zh-Hans'
 }
 
 const internalToBrowserLocale = code => specialLanguageCodes[code] || code
 
+const internalToBackendLocale = code => internalToBrowserLocale(code).replace('_', '-')
+
+const getLanguageName = (code) => {
+  const specialLanguageNames = {
+    'ja_easy': 'やさしいにほんご',
+    'zh': '简体中文',
+    'zh_Hant': '繁體中文'
+  }
+  const languageName = specialLanguageNames[code] || ISO6391.getNativeName(code)
+  const browserLocale = internalToBrowserLocale(code)
+  return languageName.charAt(0).toLocaleUpperCase(browserLocale) + languageName.slice(1)
+}
+
+const languages = _.map(languagesObject.languages, (code) => ({ code: code, name: getLanguageName(code) })).sort((a, b) => a.name.localeCompare(b.name))
+
 const localeService = {
-  internalToBrowserLocale
+  internalToBrowserLocale,
+  internalToBackendLocale,
+  languages,
+  getLanguageName
 }
 
 export default localeService
diff --git a/yarn.lock b/yarn.lock
index a898a9324a..e413b6d1f4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5722,6 +5722,11 @@ js-base64@^2.1.9:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.5.0.tgz#42255ba183ab67ce59a0dee640afdc00ab5ae93e"
 
+js-cookie@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/js-cookie/-/js-cookie-3.0.1.tgz#9e39b4c6c2f56563708d7d31f6f5f21873a92414"
+  integrity sha512-+0rgsUXZu4ncpPxRL+lNEptWMOWl9etvPHc/koSRp6MPwpRYAhmk0dUG00J4bxVV3r9uUzfo24wW0knS07SKSw==
+
 "js-tokens@^3.0.0 || ^4.0.0", js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"