Yes, from the instructor dashboard for a course, under the ‘Data Download’ tab, there are several reports that can be generated and downloaded. You may find ‘Download profile information as CSV’ and ‘Generate Grade Report’ useful.
There is a bulk email feature that can be configured to allow sending a bulk email to all students enrolled in a course from the instructor dashboard. See this thread for a recent discussion on setting this up: How to send mass emails in Open edX?. The behaviour of this feature is also described in the docs.