Express ClickYes is a tiny program that sits in the taskbar and clicks the Yes button on behalf of you, when Outlook’s Security Guard opens prompt dialog saying that a program is trying to send an email with Outlook or access its address book.
Foxit PDF Preview Handler
Not from Foxit but uses the Foxit enginge to preview PDF-attachments in Outlook 2007 (currently supports Windows Vista only)
Adobe PDF Preview Handler
Not from Adobe but uses the Adobe enginge to preview PDF-attachments in Outlook 2007 (requires Adobe Reader 7 or 8 to be installed)
Mailto URL
Sick and tired of Outlook blocking url-files? Send text-based links instead with this tool.
Duplicates Remover (30 day functional trial)
Remove duplicate mail, calendar, contacts, task, notes and journal items from Outlook. A full version can be bought with a discount when you use “4PM76A8” when ordering
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats
You might want to include this link when sending mails with an attachment in the new Office 2007 document format. By installing the Compatibility Pack in addition to Microsoft Office 2000, Office XP, or Office 2003, you will be able open, edit, and save files using the file formats new to Word, Excel, and PowerPoint 2007.
Live Meeting 2005 Add-in: Live Meeting Add-in Pack
With the Live Meeting Add-in Pack, you can perform conferencing tasks directly from Microsoft Office Outlook, Word, Excel, PowerPoint, Project, Visio, as well as from Windows Messenger, MSN Messenger, and Office Communicator 2005.
Xbox Theme for Microsoft Outlook Web Access
Add a Xbox theme to OWA. Also see this article KB Article
Calendar Printing Assistant for Outlook 2007/2010
The Calendar Printing Assistant for Microsoft Outlook 2007 and Outlook 2010 is a program that provides an easy way to print and customize Outlook 2007/2010 calendar information.
Windows Live Local Add-in for Microsoft Office Outlook
Windows Live Local for Outlook adds maps, routes, traffic updates, driving directions, and travel time to your Microsoft Office Outlook meeting requests. See maps in road, aerial, bird’s eye view, and amazing 3D view!