I have a question regarding to in-place hold.
I’ve read that legal hold for Office 365 counts towards your mailbox size which is has a limit of 50GB per mailbox. I also know that you can enable archiving rules so that mail moves to the archive and it will allow for more space in the mailbox for legal hold.
Do you know when you setup rules to move mail to archive, can it move legal hold items to it as well since archive mailbox has no limits on the size?? So, if you enable legal hold, then what will happen if you run out of the space? 7 years sounds like you need more then 50GB of space per mailbox.