I need save a MailMessage to .msg file. In this article have a solution but when I save as .msg file, it does not work in MS Outlook. It only great work when I save as.eml file.
How to save MailMessage object to disk as *.eml or *.msg file
Note that I get when open the .msg file:
Cannot open file: path. The file may not exist, you may not have permission to open it, or it may open in another program. Right-click the folder that contains the file, and then click Properties check your permisstions for the folder.
Thank all.
How exactly are you creating the MSG file? It is completely different from an EML file - see https://stackoverflow.com/questions/16229591/difference-between-a-msg-file-and-a-eml-file/16230261#16230261
MSG file format is a binary IStorage file, and its format is documented. You can parse your EML (MIME) file and copy one property at a time to a programmatically created MSG file.
If using Redemption is an option (I am its author), you can use Session.CreateMessageFromMsgFile to create a new MSG file and RDOMail.Import method to import your existing EML file.
set Session = CreateObject("Redemption.RDOSession")
set Msg = Session.CreateMessageFromMsgFile("c:\temp\test.msg")
Msg.Sent = true '//since Import does not copy this property
Msg.Import("c:\temp\test.eml", 1024) ' //1024 is olRfc822
Msg.Save