We have an issue where Exchange Online users are unable to send voting buttons to other Exchange Online users or to our On-Premise users. On-Premise users however can send emails with Voting Buttons.
I have run this command within Exchange Online
Set-RemoteDomain “default” -TNEFEnabled $true
And verified it is set with Get-Domain.
As well in the testing Outlook 365 clients we have set the following:
But we still can not send voting buttons.