This is tool that can pack attachments so that the space requirement in PST file is reduced.
This is a free tool that lets you to pack attachments in Microsoft Outlook. It is able to compress attachments in messages, contacts, tasks, calendar and journal items quickly and easily. Packed attachments will reduce the space requirements and thus reduce the size of the PST / OST storage files and improve Outlook performance. The deterioration of Outlook performance as the PST files grow is a well-known problem. Compressed attachments in mailboxes and Exchange Server public folders speed up message loading process. The overall efficiency of the messaging system efficiency also increases. Some of the other useful features include ability to open blocked attachment types, the ability placing executables inside the archives eliminates the possibility of accidental .exe launches. The utility will pack attachments to ZIP archive. The original attachment is removed from Outlook. Several attachments can be compressed to the one common ZIP file or separate archives.
Attachment name patterns can be specified for selective compression. Such selected archives can have names that include text strings that identify the document pattern. The tool is able to pack attachments of selected elements, folders or even whole storages. The Outlook does not have to be running to achieve that. The interface is very simple and there need not be any significant familiarization time required. This is a very good product and is a good option when you have a need for a tool like this. Go ahead and try it out in your exact work settings.