Methods and systems are described for processing a request for a resource in a communication. In an aspect, a criterion is received, by a second node, for requesting a resource via a first communication addressed to a first node. The first communication is sent, to the first node, including an attachment request based on the criterion. A second communication is received, by the second node, including the resource as an attachment.In another aspect a first communication is received by a first node representing a first user. The first communication includes a first message addressed to the first user. An attachment request is detected in the first communication. A resource is located based on the attachment request. A second communication is sent, to a second node representing a second user. The second communication includes the resource, as an attachment, and a second message addressed to the second user.