diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 87ce8cb..e933f97 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,9 +4,10 @@
     <option name="autoReloadType" value="ALL" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="3fefb2c4-b6f9-466b-a523-53352e8d6f95" name="更改" comment=":bug: Bug fixes on localization">
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/factors.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/factors.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/tokens.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/tokens.go" afterDir="false" />
+    <list default="true" id="3fefb2c4-b6f9-466b-a523-53352e8d6f95" name="更改" comment=":bug: Fix email html rendering">
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pkg/internal/http/api/accounts_api.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/http/api/accounts_api.go" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pkg/internal/services/accounts.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/accounts.go" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -45,35 +46,35 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent"><![CDATA[{
-  "keyToString": {
-    "DefaultGoTemplateProperty": "Go File",
-    "Go Build.Backend.executor": "Run",
-    "Go 构建.Backend.executor": "Run",
-    "RunOnceActivity.ShowReadmeOnStart": "true",
-    "RunOnceActivity.git.unshallow": "true",
-    "RunOnceActivity.go.formatter.settings.were.checked": "true",
-    "RunOnceActivity.go.migrated.go.modules.settings": "true",
-    "RunOnceActivity.go.modules.automatic.dependencies.download": "true",
-    "RunOnceActivity.go.modules.go.list.on.any.changes.was.set": "true",
-    "git-widget-placeholder": "master",
-    "go.import.settings.migrated": "true",
-    "go.sdk.automatically.set": "true",
-    "last_opened_file_path": "/Users/littlesheep/Documents/Projects/Hypernet/Passport",
-    "node.js.detected.package.eslint": "true",
-    "node.js.selected.package.eslint": "(autodetect)",
-    "nodejs_package_manager_path": "npm",
-    "run.code.analysis.last.selected.profile": "pProject Default",
-    "settings.editor.selected.configurable": "preferences.intentionPowerPack",
-    "ts.external.directory.path": "/Users/littlesheep/Documents/Projects/Hydrogen/Passport/web/node_modules/typescript/lib",
-    "vue.rearranger.settings.migration": "true"
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;DefaultGoTemplateProperty&quot;: &quot;Go File&quot;,
+    &quot;Go Build.Backend.executor&quot;: &quot;Run&quot;,
+    &quot;Go 构建.Backend.executor&quot;: &quot;Run&quot;,
+    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.git.unshallow&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.go.formatter.settings.were.checked&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.go.migrated.go.modules.settings&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.go.modules.automatic.dependencies.download&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.go.modules.go.list.on.any.changes.was.set&quot;: &quot;true&quot;,
+    &quot;git-widget-placeholder&quot;: &quot;master&quot;,
+    &quot;go.import.settings.migrated&quot;: &quot;true&quot;,
+    &quot;go.sdk.automatically.set&quot;: &quot;true&quot;,
+    &quot;last_opened_file_path&quot;: &quot;/Users/littlesheep/Documents/Projects/Hypernet/Passport&quot;,
+    &quot;node.js.detected.package.eslint&quot;: &quot;true&quot;,
+    &quot;node.js.selected.package.eslint&quot;: &quot;(autodetect)&quot;,
+    &quot;nodejs_package_manager_path&quot;: &quot;npm&quot;,
+    &quot;run.code.analysis.last.selected.profile&quot;: &quot;pProject Default&quot;,
+    &quot;settings.editor.selected.configurable&quot;: &quot;preferences.intentionPowerPack&quot;,
+    &quot;ts.external.directory.path&quot;: &quot;/Users/littlesheep/Documents/Projects/Hydrogen/Passport/web/node_modules/typescript/lib&quot;,
+    &quot;vue.rearranger.settings.migration&quot;: &quot;true&quot;
   },
-  "keyToStringList": {
-    "DatabaseDriversLRU": [
-      "postgresql"
+  &quot;keyToStringList&quot;: {
+    &quot;DatabaseDriversLRU&quot;: [
+      &quot;postgresql&quot;
     ]
   }
-}]]></component>
+}</component>
   <component name="RecentsManager">
     <key name="CopyFile.RECENT_KEYS">
       <recent name="$PROJECT_DIR$/keys" />
@@ -159,7 +160,6 @@
   </component>
   <component name="VcsManagerConfiguration">
     <option name="CHECK_CODE_SMELLS_BEFORE_PROJECT_COMMIT" value="false" />
-    <MESSAGE value=":truck: Rename daily-sign to check-in" />
     <MESSAGE value=":sparkles: Result modifiers in check-in" />
     <MESSAGE value=":boom: Passing relationship api arguments in body instead of querystring" />
     <MESSAGE value=":sparkles: Better check in experience random algorithm" />
@@ -184,7 +184,8 @@
     <MESSAGE value=":sparkles: Push email &amp; notification localization" />
     <MESSAGE value=":globe_with_meridians: Fully localized notification" />
     <MESSAGE value=":bug: Bug fixes on localization" />
-    <option name="LAST_COMMIT_MESSAGE" value=":bug: Bug fixes on localization" />
+    <MESSAGE value=":bug: Fix email html rendering" />
+    <option name="LAST_COMMIT_MESSAGE" value=":bug: Fix email html rendering" />
     <option name="GROUP_MULTIFILE_MERGE_BY_DIRECTORY" value="true" />
   </component>
   <component name="VgoProject">
diff --git a/pkg/internal/http/api/accounts_api.go b/pkg/internal/http/api/accounts_api.go
index e589619..20203ab 100644
--- a/pkg/internal/http/api/accounts_api.go
+++ b/pkg/internal/http/api/accounts_api.go
@@ -153,6 +153,7 @@ func doRegister(c *fiber.Ctx) error {
 		Nick       string `json:"nick" validate:"required"`
 		Email      string `json:"email" validate:"required,email"`
 		Password   string `json:"password" validate:"required,min=4,max=32"`
+		Language   string `json:"language" validate:"required,bcp47_language_tag"`
 		MagicToken string `json:"magic_token"`
 	}
 
@@ -181,6 +182,7 @@ func doRegister(c *fiber.Ctx) error {
 		data.Nick,
 		data.Email,
 		data.Password,
+		data.Language,
 	); err != nil {
 		return fiber.NewError(fiber.StatusBadRequest, err.Error())
 	} else {
diff --git a/pkg/internal/services/accounts.go b/pkg/internal/services/accounts.go
index 97a66c1..794ab6d 100644
--- a/pkg/internal/services/accounts.go
+++ b/pkg/internal/services/accounts.go
@@ -122,7 +122,7 @@ func SearchAccount(probe string) ([]models.Account, error) {
 	return accounts, nil
 }
 
-func CreateAccount(name, nick, email, password string) (models.Account, error) {
+func CreateAccount(name, nick, email, password, lang string) (models.Account, error) {
 	user := models.Account{
 		Name: name,
 		Nick: nick,
@@ -143,6 +143,7 @@ func CreateAccount(name, nick, email, password string) (models.Account, error) {
 				VerifiedAt: nil,
 			},
 		},
+		Language:    lang,
 		PermNodes:   datatypes.JSONMap{},
 		ConfirmedAt: nil,
 	}