diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index 373af0d..6b8066b 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -30,6 +30,6 @@ jobs:
       with:
         oauth: ${{ secrets.CODEX_OAUTH }}
         prompt: "請自我介紹"
-    - name: 檢查登入帳號
-      if: ${{ steps.codex.outputs.email != vars.CODEX_EMAIL }}
+    - name: 檢查登入
+      if: ${{ steps.codex.outputs.text == '' }}
       run: exit 1
diff --git a/action.yml b/action.yml
index b18fc6d..78beab2 100644
--- a/action.yml
+++ b/action.yml
@@ -13,9 +13,6 @@ outputs:
   text:
     description: '輸出的文字'
     value: ${{ steps.codex.outputs.text }}
-  email:
-    description: '目前登入帳號的電子郵件（取自 OAuth id_token）'
-    value: ${{ steps.codex.outputs.email }}
 runs:
   using: 'composite'
   steps:
@@ -43,21 +40,9 @@ runs:
 
       text="$(codex exec --skip-git-repo-check -s danger-full-access --model "$MODEL" "$PROMPT")"
       printf '%s\n' "$text"
-
-      # 從 OAuth id_token（JWT）解出目前登入帳號的 email；正規表示式對冒號後空白容錯
-      auth_file="$HOME/.codex/auth.json"
-      id_token="$(grep -oE -m1 '"id_token"[[:space:]]*:[[:space:]]*"[^"]*"' "$auth_file" | sed -E 's/.*:[[:space:]]*"//; s/"$//' || true)"
-      payload="$(printf '%s' "$id_token" | cut -d. -f2 | tr '_-' '/+')"
-      case $((${#payload} % 4)) in
-        2) payload="${payload}==" ;;
-        3) payload="${payload}=" ;;
-      esac
-      email="$(printf '%s' "$payload" | base64 -d 2>/dev/null | grep -oE -m1 '"email"[[:space:]]*:[[:space:]]*"[^"]*"' | sed -E 's/.*:[[:space:]]*"//; s/"$//' || true)"
-
       {
         echo 'text<<CODEX_OUTPUT'
         printf '%s\n' "$text"
         echo 'CODEX_OUTPUT'
-        echo "email=$email"
       } >> "$GITHUB_OUTPUT"
     shell: bash