Read Receipt feature of k12 email

Some of our customers have inquired about the 'read receipt' feature stating that it does not work when sending email to another user who accesses email through Portal.  I want to confirm that the 'read receipt' feature does work but the recipient of the email must have the 'Send read receipt when requested by the sender?'
option turned on.
 
To request a read receipt, click on the Options icon at the top of the screen. Under the Message Options column click on Message Composition. The last option
on this page is Request read receipts?, select always to always request a read receipt or select ask to have the Request a read receipt feature appear when you
compose an email.

 
 
 

To enable 'Send read receipt when requested by the sender?', click on the Options icon at the top of the screen. Under the Message Options column click on Message Viewing. The last option on this page is Send read receipt when requested by the sender?, check the box to enable this feature. This will allow a read receipt to be sent when you view a message in which the user has requested that they receive notification that you have read the message. You may have to manually decide to send the notification by clicking on a link.