There are several ways to share saved sessions with others.
If you have saved your settings to a local file, you can send email to others with the file as an attachment and direct them to https://gander3.wustl.edu/cgi-bin/hgTracks .
If a saved settings file is available from a web server, you can send email to others with a link such as https://gander3.wustl.edu/cgi-bin/hgTracks?hgS_doLoadUrl=submit&hgS_loadUrlName=U where U is the URL of your settings file, e.g. http://www.mysite.edu/~me/mySession.txt . In this type of link, you can replace "hgSession" with "hgTracks" in order to proceed directly to the Genome Browser. For an example page using such links please see the Session Gallery.