My issue is a client's Gmail mailbox is full. They run Gmail G-Suite for Business. I cannot track down the messages using the space.
If I do the search "in:all" the result is 1-50 of 15,083. When I do the search "in:all before:2018/6/18" I get 1-50 of 88 and I do the search "in:all after:2018/6/18" I get 1-50 of 186. So where did the other 14,809 message go? More importantly how do I track down the messages using 30gb of storage space.
The storage information says its all Gmail and no Photos or Drive space contributes to the storage use. Also there is nothing in "Trash"
Maybe there is a better place to look than label:all?