ghost/admin/public/assets/icons/email-unread.svg
<svg width="18" height="16" fill="none" xmlns="http://www.w3.org/2000/svg">
<title>email-unread</title>
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<path d="M1.34 2.708a.5.5 0 01.703-.071l6.958 5.687 6.957-5.687a.5.5 0 11.633.774L9.317 9.356a.5.5 0 01-.633 0L1.41 3.411a.5.5 0 01-.07-.703z"/>
</svg>