I am looking for some ideas of internal messaging among staff at my veterinary hospital. Right now, we use the messaging feature in our cloud based electronic medical record system. However, the company keeps making shitty updates that makes the messaging feature frustrating to use anymore.

What I really need is for staff to be able to send messages to the doctor when an owner calls and/or when someone calls to get a medication refill authorization. I also need to be able to send messages back to staff if they need to relay a message to an owner or do a certain task. It would be nice to be able to have each individual user have their own user name, but also be able to categorize them (i.e. technicians, doctors, receptionists). I would like it to where all staff can see all the messages just in case someone is not there and the message needs to be answered by someone else. Any ideas on something that could fit this use case?

Thanks!