Make sure to use journaling or google takeout to backup the mailboxes before deleting mail. If you have a data retention policy or requirement you can trim anything/everything past that point and if needed (discovery) you can go to your backup.

Didnt know they now had different levels of non profit plans, not sure if they will do partial upgrades if they did it would be a cheat i.e. only put certain users on the plan. I have done something similar where we had 2 sku of users one with extra ...

Yes, some have reached that point earlier and there is no good solutions only cumbersome work arounds or upgrading out of non profit and paying the full amt

The 1 year thing doesn't sound right. Extending storage personally is only given to accounts older than 3 or 4 years so a more likely situ is that there are left over flags in the account, allowing them to go to one.google to purchase storage like a ...

Even with pooled storage you have to unshare each file then move it to the pooled storage and share again. Also the pooled storage is for internal use only and cannot be shared with anyone outside the org. If this is incorrect please someone correct ...