Do you forget to include attachments when you are sending an Outlook email? I hate when that happens!
If so, try Attachment Alarm for Microsoft Outlook. This add-in is very easy to use. You just specify the words or phrases that occur in an email message and imply an attachment (“see attachments”, “see attachment”, “in attachment”, “the file attached” etc.). Attachment Alarm scans all outgoing e-mail messages and if it finds words or phrases from the Key words list, it raises the alarm and suggests inserting an attachment in a Microsoft Outlook message.
Attachments Alarm for Outlook works with Microsoft Office Outlook 2010 32-bit, Outlook 2007, Outlook 2003, Outlook XP (2002), Outlook 2000 and is compatible with Windows 7 (x86, x64), Windows Server 2008, Windows Vista (x86, x64), Windows 2003 and Windows XP.
It is very reasonably priced: US$19.95 for one licence that can be used on up to three computers. Bulk discounts are available.