I have a client using office 365 email and they have 4 normal accounts licensed as users.
They have support@customerdomain.com, Contact@customerdomain.com, Appointments@customerdomain.com, etc.
I would like to change these to shared mailboxes as there are several people in the office that need to manage these accounts depending on work schedule.
There really is no email in them at this point. My questions are
1. what is the best way to convert these to shared mailboxes just delete them and recreate as shared mailboxes?
2. does the archive / retention work on shared mailboxes?
3. from a few older examples I have seen it appears that if you are using outlook when you respond it will make the from address the shared mailbox account name and not that specific user but if using Outlook web app you have to change the from address on each email? Is this still the case?