I'd like to know which attachment types that canbe rendered as HTML
when I click "View as HTML" in ZWC.

A procuct comparison guide named "ZCS_Exchange_Server_2007_Comparison April 09.doc" says
"Number of attachment types that can be converted and viewed as HTML is limited in Exchange. Zimbra supports over 200 attachment types that can be rendered as HTML".

Does anyone have the list of attachment types?

Our ZCS version is 5.0.16(NE).

Soichiro Miki
Hitachisoft Zimbra Support