Activity stream @mentioned emails are not visible to non admin users.Issue <!-- div.margin { padding: 10px 40px 40px 30px; } table.tocTable { border: 1px solid; border-color: #e0e0e0; background-color: #fff; } .title { color: #d1232b; font-weight: normal; font-size: 28px; } h1 { color: #d1232b; font-weight: normal; font-size: 21px; margin-bottom: 5px; border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: #cccccc; } h2 { color: #646464; font-weight: bold; font-size: 18px; } h3 { color: #000000; font-weight: bold; font-size: 16px; } h4 { color: #666666; font-weight: bold; font-size: 15px; } h5 { color: #000000; font-weight: bold; font-size: 13px; } h6 { color: #000000; font-weight: bold; font-size:14px; } ul, ol { margin-left: 0; list-style-position: outside; } --> Symptoms If a non admin user @mentions another non admin user in the activity stream for the record, both the users are not able to see the email in sys_email table. Release Any supported version Cause Script in table level read ACL for sys_email table checks for the user's access to live_notification table for @mentioned emails. If the script fails, it would restrict the user from seeing @mentioned emails in sys_email table. Resolution Create table level ACL on live_notification table according to the requirement so that the user has access to live_notification table.