Index: app/views/mailer/_issue.html.erb
===================================================================
--- app/views/mailer/_issue.html.erb	(revision 14759)
+++ app/views/mailer/_issue.html.erb	(working copy)
@@ -1,3 +1,11 @@
+<div itemscope itemtype="http://schema.org/EmailMessage">
+  <div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
+    <link itemprop="url" href="<%= issue_url %>"></link>
+    <meta itemprop="name" content="<%= l(:label_issue_view) %>"></meta>
+  </div>
+  <meta itemprop="description" content="<%= l(:text_issue_view_description) %>"></meta>
+</div>
+
 <h1><%= link_to("#{issue.tracker.name} ##{issue.id}: #{issue.subject}", issue_url) %></h1>
 
 <%= render_email_issue_attributes(issue, users.first, true) %>
Index: config/locales/en.yml
===================================================================
--- config/locales/en.yml	(revision 14759)
+++ config/locales/en.yml	(working copy)
@@ -519,6 +519,7 @@
   label_issue: Issue
   label_issue_new: New issue
   label_issue_plural: Issues
+  label_issue_view: View issue
   label_issue_view_all: View all issues
   label_issues_by: "Issues by %{value}"
   label_issue_added: Issue added
@@ -1119,6 +1120,7 @@
   text_session_expiration_settings: "Warning: changing these settings may expire the current sessions including yours."
   text_project_closed: This project is closed and read-only.
   text_turning_multiple_off: "If you disable multiple values, multiple values will be removed in order to preserve only one value per item."
+  text_issue_view_description: "View the issue online"
 
   default_role_manager: Manager
   default_role_developer: Developer