shared mailbox Vs unified group

Question

Hi all

What are the differences between shared mailbox and unified group, i am seeing the below 3 differences. Are there any other differences

Email sent as a group email address will not appear in the group Sent Items folder
Groups do not support creation sub folders.
Shared mailboxes are not supported on mobile devices where as group mailboxes does support.

Answer 1

Here are more differences:
Shared mailboxes are created for users inside the organization, external users cannot have access to the shared mailbox.
Shared mailboxes are mailboxes, and used when multiple people need access to the same mailbox. However, if too many users concurrently are accessing a shared mailbox, it may cause issues and cannot connect to the shared mailbox.

You can check these articles for more details about unified group and shared mailboxes:
Compare groups,
About shared mailboxes,
Overview of Microsoft 365 Groups for administrators.

Additionally, it's supported to access shared mailbox using Outlook for mobile. For your reference: Add a shared mailbox to Outlook mobile.

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Answer 2

Other differences:
Group mailboxes have support for external collaboration that shared mailboxes do not.
Group mailboxes have more support with application services in 365.

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