Direct traffic to a website corresponds to cases when visitors access a website without going through a link on a web page.
Direct traffic corresponds to:
access by an email link.
access by keyboarding the URL in the browser address bar.
access by a bookmark or favorite.
Accesses by email on a webmail are considered by web analytics tools to be referral accesses because the consultation is on a webpage.
In web analytics dashboards, direct accesses are listed in traffic sources with referrers pages and visits from search engines.
Visits from search engines with a request done with the site name, domain name or with its URL are actually another mode of direct traffic or access since a lot of Internet users use Google as a browser address bar.