Crawl websites locally with crawl4ai to extract contact emails. Accepts multiple URLs and outputs domain-grouped results for clear attribution. Uses deep crawling with URL filters (contact, about, support) to find emails on relevant pages. Use when extracting emails from websites, finding contact information, or crawling for email addresses.

使用 crawl4ai 在本地抓取网站以提取联系邮箱，支持多个 URL，输出按域名分组的结果以便明确归属。通过深度抓取并结合联系、关于、支持等 URL 过滤器，在相关页面中查找邮箱地址。适用于从网站提取邮箱、查找联系信息或抓取邮箱地址的场景。