I've had teachers try to select a group of students from the
participant list and tried to send a common message to them; however,
the process seems to fail with little helpful feedback other than some
of the messages may not have been delivered. The process seems to me to
be remarkably slow and I am not sure why. It would not seem like that
complex of a query to insert the records into the mdl_messages table. I
have entered an improvement in the tracker as MDL-6899 that would allow
for increased feedback in the event of an error. At this point, it is
difficult to know what is happening other than the fact that the
messages are not being sent. I'm curious if others have had any success
and/or difficulty in using this functionality. Peace.