Deletion of email attachements in crm

Deletion of email attachements in crm

Just seeing if there is a work around for this problem or if others have experienced it ?
We send out single email repsonses to contacts and attach a couple of documents to each email.
i want to keep a record of the email going out , preferably the email itself ( no need for the attachments to be stored ) within the contacts record.
It seems that the attachments count towards our storage total.
It is the same attachment in hundreds of emails and pushes our storage over its limit.  I  have no need for this document to be stored within ZOHO thousands of times.
Apparently there is no way to delete the attachments just the whole email and in doing this i loose the record of it being sent.  Does anyone know a way ?
I realise that if i send out 100 emails the attachments only count once but that doesnt help me as they are single emails and the attachements still get stored.
Thanks for your assistance