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Overview

CDO is a technology for building messaging or collaboration applications. CDO can be used separately or in connection with Outlook Object Model to gain more access over Outlook. CDO is not a part of Outlook Object Model and it doesn't provide any event-based functionality, nor can Outlook objects be manipulated using CDO.

Starting with Exchange 2007, neither the Messaging API (MAPI) client libraries nor CDO 1.2.1 are provided as a part of the base product installation. They are available as downloads.¹²³

Versions

• CDONTS: available on Windows NT 4.0 by installing the Option Pack, or Exchange Server.
• CDOSYS: available on Windows 2000 and onwards by installing the SMTP service in Internet Information Server (IIS).

See also

• Collaboration Data Objects for Windows NT Server
• MAPI
• ActiveX

External links

• j-XChange - Pure and Open Source (LGPL v3) Java implementation of the Collaboration Data Objects (CDO 1.21) for accessing Microsoft Exchange Server in a platform independent manner.
• Overview of CDO - Overview of CDO at MSDN
• CDOSYS protocol[permanent dead link]

Downloads

• ExchangeMapiCdo.EXE download
• ExchangeCdo.MSI download

References

1. "Collaboration Data Objects, version 1.2.1". Microsoft. Archived from the original on 2011-12-19. Retrieved 2011-12-14. https://web.archive.org/web/20111219023339/http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=3671 ↩

2. "Microsoft Exchange Server MAPI Client and Collaboration Data Objects 1.2.1". Microsoft. Archived from the original on 2011-12-26. Retrieved 2011-12-14. https://web.archive.org/web/20111226194035/http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=1004 ↩

3. "Microsoft Exchange Server MAPI Client and Collaboration Data Objects 1.2.1 March 2014 Update". Microsoft. https://www.microsoft.com/en-ca/download/details.aspx?id=42040 ↩