The site must have a different full name (SiteFullName) and short name (SiteShortName). Setup a mailing server and connect it to moodle (eg. Mercury). Also set up the moodle cronjob. Create a course, add a forum activity with mandatory subscription. Create a user and add them as a participant to the course. On the User go to Preferences->Forum Preferences->Email Digest Type->Complete->Save Navigate to the course, then forum activity and add a discussion topic, with the advanced option "Send forum post notifications with no editing-time delay ". Await for the digest email to arrive to the user. Check that the subject on the E-Mail begins with the site short name (SiteShortName) and that the email's first sentence is "This is your daily digest of new posts from the SiteFullName forums." Go to Site Administration->Language->Language Customization->English->Open pack->mod/forum.php->String Identifier->digestmailsubject->change "$a->siteshortname" to "$a->sitefullname"->Save Go to Site Administration->Language->Language Customization->English->Open pack->mod/forum.php->String Identifier->digestmailheader->change "$a->sitefullname" to "$a->siteshortname"->Save Purge the language caches. Navigate to the course, then forum activity and add a discussion topic, with the advanced option "Send forum post notifications with no editing-time delay ". Await for the email to arrive to the user. Check that the subject on the E-Mail begins with the site full name (SiteFullName) and that the email's first sentence is "This is your daily digest of new posts from the SiteShortName forums."