06-27-2019 01:11 PM
06-27-2019 01:14 PM - edited 06-27-2019 01:15 PMSolution
Your shared mailbox can store up to 50GB of data without you assigning a license to it. After that, you need to assign a license to the mailbox to store more data. For more details on shared mailbox licensing, please see Exchange Online Limits. 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. Then, after that, it will stop receiving email. Senders to the mailbox will get a non-delivery receipt.
06-28-2019 01:19 AM
@Greg Taylor - EXCHANGE thank you for your reply.
But is license also not required to migrate shared mailbox created in on-premise to exchange to online?
07-01-2019 12:35 PM
@Jacek Czeszewski not if the conditions I posted to still apply. If the shared mailbox you want to migrate is under 50GB you are ok. If not, you'll need a license.