A user tried to use Remote Assistance and send an invitation for help through their default email client, but Remote Assistance ...

A user tried to use Remote Assistance and send an invitation for help through their default email client, but Remote Assistance failed to successfully send the invitation.  It is possible the email client configured as the default client does not support SMAPI calls, or that the email client is improperly configured.  It is also possible that the user closed the email client without sending the message.