curl -X POST "https://server.smartlead.ai/api/v1/email-accounts/tag-list" \
  -H "Content-Type: application/json" \
  -d '{"email_ids": ["sender@company.com", "outreach@company.com"]}'

{
  "ok": true,
  "data": [
    {
      "email_account_id": 101,
      "from_email": "sender@company.com",
      "tags": [
        {"id": 1, "name": "Primary Senders", "color": "#4CAF50"},
        {"id": 2, "name": "Campaign A", "color": "#2196F3"}
      ]
    }
  ]
}

{
  "message": "Invalid API Key"
}