Message processing is disclosed that includes detecting an action by a sending user selecting at least one portion of a message. An indication of the selected portion of the message is stored in the message, and the message transmitted to at least one message recipient. Contextually related content from the message for the selected portion may also be indicated in the message. The selected portion or portions of the message may be displayed to a recipient user, and selection by the recipient user of a portion of the message selected by said sending user may be detected. Contextually related content may be retrieved from the message in response detecting the recipient user's selection of the portion of the message selected by said sending user, and the contextually related content displayed to the recipient together with the portion of the message selected by said sending user.