Abstract: A messaging service receives an electronic message, including an attachment, from a sender client device and addressed to a recipient client device. The messaging service obtains information associated with the recipient client device to determine one or more actions that may be performed with regard to the attachment included within the electronic message. Once the determination as to the one or more actions has been made, the messaging service may perform the one or more actions, which may include transformation of the electronic message. The messaging service may subsequently provide the electronic message to the recipient client device in accordance with the performed one or more actions.