In a shared inbox, the worst outcome is two people replying — or nobody. Attending and taking over make ownership explicit.
Attend So Colleagues Know
Attending a conversation shows the rest of the team it is being handled, which stops two people answering the same customer.
Managers Can Take Over
A manager can take over a conversation when it needs escalating, without the customer starting again in a new thread.
You Will Hear It Arrive
New messages and new conversations play a sound, so a busy counter does not leave a customer waiting on a silent screen.