A method, system and computer program product for supporting email message size reduction. Example operations may include identifying a first email recipient that is to receive a full version of an email message (full email message), identifying a second email recipient representing a new class of email recipient that is to receive a summary version of the email message (summary email message), and performing an action to facilitate the full email message being sent to the first email recipient and the summary email message being automatically generated from the full email message and sent to the second email recipient. The foregoing operations may be performed in one way by an email client and in another way by an email server. The email client and the email server may share responsibility for reducing email message size. Alternatively, the email client (or another implementing entity) may act alone.