The required Outlook® version can be found in the particular description of the program.

Basically all add-ins work with Outlook® 2000/2002/2003/2007 running under the operating systems Windows® 2000/XP/Vista®.

For older Outlook® versions an installation is not possible.

It might be possible that the add-ins (partially) work with 98/NT and/or server operationg systems. But this is not tested and therefor no support is provided.