Unable to use 'Voting Options' property in the MailItem variable

For Microsoft.Office.Interop.Outlook.MailItem, when I use ‘Voting Options’, I get an error - not a member of Microsoft.Office.Interop.Outlook. I also tried to import the namespace and then use the option, but could not. Any idea why we are unable to use this option? And how can we use it.

Hi… did you manage to find a solution for the voting options in the email? If “Yes” could you please share the solution as well since I am also having a similar requirement. Thanks!