You have email messages more than 24 hours old that haven't been sent. To send these messages, sign in to Microsoft Dynamics ...

You have email messages more than 24 hours old that haven't been sent. To send these messages, sign in to Microsoft Dynamics 365 for Outlook, or verify with your system administrator that server-side synchronization or the Email Router is set up to send messages for you. For more information about email configuration, see online Help.