Worldwide Headquarters Contact our headquarters in Kirkland, WA Headquarters Office Street and Mailing Address: Mainstar Software Corporation 4020 Lake Washington Blvd., Suite 202 Kirkland, WA 98033 Phone: 425-968-9200 or 1-800-233-6838 Fax: 425-968-9204 E-mail: info@mainstar.com vCard: mainstar.vcf Technical Support Inquiries E-mail: techsupport@mainstar.com Phone: 425-968-9200 Sales Information E-mail: sales@mainstar.com or product_info@mainstar.com Web Site Inquiries E-mail: webmaster@mainstar.com