To make hashtags stand out clearly in the archive, any hashtags placed at the beginning or in the middle of a message’s subject line are duplicated at the end of the subject line, using whatever background color was chosen for the hashtag.

Example: A subject entered as “Seeking #advice for a #rosebush with blackened leaves” would be displayed in the archive as “Seeking #advice for a #rosebush with blackened leaves #advice #rosebush.”