SharePoint Document Libraries is a great way to store and share any kind of documents, and SharePoint Attachments for Outlook makes it easier to utilize those features.
Having trouble with attachments? They tend to get blocked by spam filters, mailbox sizes and other issues. A much better solution is of course to publish the files to a SharePoint Document Library instead and just send a link in your e-mail.
SharePoint Attachments for Outlook does exactly this. When you add an attachment to your e-mail in any way, the attachment will be published to a SharePoint website, and a link will be added to your email instead of the attachment. This can be done automatically or only when you choose it, depending on how you define your SP Attach Settings.
SP Attach works with Outlook 2000 and above and with any website that supports WebDav (IIS or FrontPage Extensions Web).