in outlook I set up message format as HTML. in this case when I send email to a user inside the organization,  is this message going to edb databse or stm database?
when the user tries to read the message is the message  going to be converted from MIME to MAPI?


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I am not 100% sure of this, but I believe if the message is originated in a MAPI client, even if it uses the HTML format, it is stored in the EDB. If you make an attachment, I think that is put into the STM. Anything that comes from outside is "on-the-fly" converted to the MAPI format when you open it for viewing, but I believe it stays in the STM for storage and a cached copy may be maintained in the EDB, but I am not sure about this. It has been a long time since I read some articles/books about this so I may be a little fuzzy here.


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jskfanAuthor Commented:

let me search and get back with you
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