Missing 'To' in Activity Stream Email Response Actions when caller is 'Guest'DescriptionBy enabling the system property 'glide.ui16.emailStreamResponseActions' it turns on the Email Stream Response Actions as expected. Once it is clicked on reply button, when the sender does not have a user record, nothing is populated in the 'To' field which is empty Steps to Reproduce 1. Create notification to send on incident creation, add non sys_user email id in receipients2. Create incident - this will send a email to the non sys_user3. Reply to the email from non sys_user email address4.The received email is seen under the activity stream5.click on response action buttons - "Reply" or "Reply all"6. The "To" field in the email client is not populating the "From" addressWorkaroundChange the recipients "To" field to "user" in "reply-received" and "replyall-received" email client templates. It will work for received emails from both the sys_user and non sys_user. But for sys_users the user interface will show sys_id in the recipients field instead of email address. It will allow the email client to pre-populate the TO field and send emails in both scenarios. https://INSTANCE-NAME.service-now.com/sys_email_client_template_list.doRelated Problem: PRB1440921