Hi friend!
What do you know about landmarks? They are often associated with tourism, navigation, and heritage — right? Examples include the Eiffel Tower in Paris, the Statue of Liberty in New York, or the Grand Canyon in the United States.
But what's the deal with landmarks in email?! Landmarks in email consist of aria roles that mark areas of navigation throughout the piece of content. When you assign role="navigation" to an element, with an aria-label="(insert your landmark name here)" you create a better end-user experience by providing navigation aids for those using screen readers.
Read the below article to get the complete 411.