Notification appears blank when forwading from outlook

Hi Experts,

I have one strange issue. Notification is sent to user's outlook from workflow which is having all the content. But when this user forwards this mail to another user from outlook then notification will appear as blank.

So my question is that is it related to some settings of email from workflow side or it is overall issue of workflow.

As this is happening to all users.

Thanks in advance

Regards,

Shiv.