Hi,
I need to know whether it is possible to grant delete rights only for e-mail attachment (activitymimeattachment entity) in MS CRM 4.0.
Is there any other way by which user is only allowed to delete the attachment and not the e-mail
E-mail attachment is an entity without an owner. Therefore, the privileges of the parent entity (E-mail) apply and you cannot define privileges specific to the attachment.
There is a similar post that asks the same question about another entity, that should give you some ideas: http://social.microsoft.com/Forums/en-US/crm/thread/9a82ac43-2b2b-4e8d-a858-4c932438f9f0/#70a115c3-36a0-4070-a7b5-aadd2e658dde