Use the XML sitemap to submit your sitemap to Google.
Access XML Sitemap
Navigate to Site tools > Dashboard > SEO (Search Engine Optimization) > XML sitemap.
XML sitemaps have a limit of 50,000 URLs. For Mindtouch sites that contain more than 50,000 pages, a master sitemap links to multiple other sitemaps that accommodate the additional pages.
MindTouch sitemaps are updated once per day at the end of the day.