In Google Workspace you have the default data migration service that can help you to migrate emails. As a Google Workspace administrator you have 2 options :
You can use Google Workspace or Gmail option, as of today April 2022 only Gmail Works… And with Gmail you can migrate data but only exclude some labels.
We built onleemigration to allow you to migrate emails from a Gmail Inbox to another Gmail Inbox or to a Google Groups and you can also select to migrate just a part of the mailbox.
To migrate only some elements of the mailbox you just have to enter the Gmail search query you want to migrate the emails related to it.
As you can enter any search query like in Gmail you can migrate just a selected part of the emails. This is really powerfull in order to not transfer sensitive emails. If you forget to exclude some private emails it can be a problem, with onleemigration you will migrate only relevant emails.
We also know that sometimes it is needed to archive emails and provide an access to them to some users but using a Google Account will consue your licences and will have a cost.
With onleemigration you will be able to migrate emails to a Google Groups, this is really convenient as Google Groups are free and you can add multiple people in access.
Let say, you need to provide access to emails received from a clients by a sales guy that leave the company. Use onleemigration to migrate just the relevant emails by using a Gmail Search Query and migrate emails to a Google Groups. Then add the manager and the new sales guy as Group member, they will have acces to emails without providing a full mailbox access.
With onleemigration you can also migrate the full mailbox to another one or a Google Groups. The application has been designed to work with multiple use cases.