Document Manager is able to store all sorts of correspondence besides receipts (maximum 5MB). However some documents take up more storage, for instance Insurance Policies, however; as these documents get updated each renewal of a policy they end up becoming obsolete.
If there were a box on Document Manager > Advanced Search > “Search by file size, From - To” a review would be available to remove older doucments that are no longer pertinent.
This would be beneficial for the purpose lowering an account’s storage and also as there is a charge of £11.99 per annum for each additional GB keep the ongoing costs of servicing an account to manageable amount.