@symbioIT
For converting MailMessage to MapiMessage, please follow the code given below:
// Create a new instance of MailMessage class
MailMessage message = new MailMessage();
// Set sender information
message.From = "from@domain.com";
// Add recipients
message.To.Add("to1@domain.com");
message.To.Add("to2@domain.com");
// Set subject of the message
message.Subject = "New message created by Aspose.Email";
// Set Html body of the message
message.HtmlBody = "This is test body.";
// Create an instance of MapiMessage and load the MailMessag instance into it
MapiMessage mapiMsg = MapiMessage.FromMailMessage(message);
// Save the MapiMessage to disk
mapiMsg.Save("New-Message.msg");
MapiMessage represents an Outlook Message format document that can be parsed. Whereas MailMessage represents an e-mail message. It allows to access message properties, ex. subject, body, sender and recipients addreses, etc. Also it can be sent and delivered by means of supported mail protocols.
Moreover, thank you for highlighting the documentation typos we will surly review this.