Then, after that, it will stop receiving email. When a shared mailbox reaches the storage limit, you'll be able to receive email for a while, but you won't be able to send new email. For more details on shared mailbox licensing, please see Exchange Online Limits. After that, you need to assign a license to the mailbox to store more data. Licenses: Your shared mailbox can store up to 50GB of data without you assigning a license to it.This is particularly useful for help and support mailboxes because users can send emails from 'Contoso Support' or 'Building A Reception Desk.'īefore you create a shared mailbox, here are some things you should know: Users with permissions to the group mailbox can send as or send on behalf of the mailbox email address if the administrator has given that user permissions to do that. Shared mailboxes are used when multiple people need access to the same mailbox, such as a company information or support email address, reception desk, or other function that might be shared by multiple people.
