The following add-ins will help you manage the attachments you receive on an email. Most of these tools are used in Outlook; a few are for use with Exchange server.
Many of these utilities will remove attachments from the email message and can replace them with links to the attachment on your hard drive, allowing you easy access to the attachment while keeping your mailbox or personal folders smaller.
You can use VBA to save attachments to the hard drive. See Save Attachments for sample code to save attachments the delete them from the message, or Save Attachments to the hard drive to save the attachments but not delete them from the message.
Others will remind you to add attachments (and subject lines) to outgoing email, compress (zip) attachments, or allow you to unblock attachments blocked by the security features of Outlook 2000 and higher.
See More Information for links to VBA Samples to save attachments and check for missing attachments and blank subject lines.
Housekeeping and Message Management Tools for Outlook
Housekeeping and Message Management Tools for Exchange Server
How to Save Email Messages to the Windows File System
Mail Tools for Outlook
Compose Tools for Outlook
VBA: Save Attachments to hard drive (Outlook-Tips.net)
VBA: Attachments: Save the selection to the harddisk (VBOffice.net)
VBA: Attachments: Delete the selection (VBOffice.net)
VBA: Check for subject before sending (VBOffice.net)
How to use VBA code samples