Attachments are outlook messages

Aspose.Email Product Family
1

Hi, I like your attachment example :

foreach (MapiAttachment attachment in msg.Attachments)

attachment.Save(attachment.DisplayName);

However, if my attachments are outlook messages, they do not open correctly.

In MAPI, there are attachment properties, PR_ATTACH_METHOD to determine what kind of attachment is in the message.

I see your example of saving an embedded attachment:

foreach (MapiAttachment attachment in msg.Attachments)

{

MapiMessage attMsg = MapiMessage.FromProperties(

attachment.ObjectData.Properties);

MailMessageInterpretor mi = MailMessageInterpretorFactory.Instance.GetIntepretor(

attMsg.MessageClass);

string attachmentName = string.Format("{0}.eml",attachment.DisplayName);

FileStream fs = new FileStream(

attachmentName,

FileMode.Create);

mi.Save(attMsg, fs, Aspose.Network.Mail.MessageFormat.Eml);

}

But, how can I extract an attachment property to determine which kind of attachment it is: PR_ATTACH_DATA_OBJ or PR_ATTACH_DATA_BIN in order to know which way to save my attachment?

Also, I cannot save using the MessageFormat.Msg. I get an exception thrown that it is not supported. Can you tell me if you know when that will be supported?

Thanks,

Karen Schmidt

2

Hi Karen,

Thanks for your inquiry.

Using above method, saving to msg format is not supported. Nested msg attachments can be saved using the following code:

MapiMessage eml = MapiMessage.FromFile(@“E:\Data\Aspose\temp\testemail with msg as attachment.msg”);
int count = 1;
foreach (MapiAttachment att in eml.Attachments)
{
// outlook msg attachments
if (att.ObjectData != null && att.ObjectData.IsOutlookMessage)
{
MapiMessage nestedAtt = MapiMessage.FromProperties(att.ObjectData.Properties);
Console.WriteLine("Nested Attachment - Subject: " + nestedAtt.Subject);
nestedAtt.Save(@“E:\Data\Aspose\temp\1.msg”);
count++;
}
// other attachments
else
{
Console.WriteLine(att.LongFileName);
byte[] content = att.BinaryData;
}
}

But unfortunately, there is a bug and we are working on it to fix this. It is also logged in our bug tracking system (ID: 8530). We will notify you when it gets fixed. Sorry for the inconvenience.

3

As an alternate solution for saving nested msg attachments, you can modify your source code as follows: It first saves nested attachments as eml and then converts eml to msg. Could you please use this approach till we fix this?

MapiMessage message = MapiMessage.FromFile(@“E:\Data\Aspose\temp\embedded.msg”);
int count = 1;
foreach (MapiAttachment att in message.Attachments)
{
// att.Save(att.Name);
if (att.ObjectData != null && att.ObjectData.IsOutlookMessage == true)
{
// create a MapiMessage object from the individual attachment
MapiMessage attMsg = MapiMessage.FromProperties(att.ObjectData.Properties);
// Create object of type MailMessageImterpretor from the above message
MailMessageInterpretor mi = MailMessageInterpretorFactory.Instance.GetIntepretor(attMsg.MessageClass);
// save the embedded message to file at disk
FileStream stream = new FileStream(@“E:\Data\Aspose\temp\att” + count.ToString() + “.eml”, FileMode.Create);
mi.Save(attMsg, stream, MessageFormat.Eml);
stream.Close();

// convert to msg
MailMessage embeddedMsg = MailMessage.Load(@“E:\Data\Aspose\temp\att” + count.ToString() + “.eml”, MessageFormat.Eml);
embeddedMsg.Save(@“E:\Data\Aspose\temp\att” + count.ToString() + “.msg”, MailMessageSaveType.OutlookMessageFormat);

count++;
}
}

4

The issues you have found earlier (filed as 8530;13625) have been fixed in [this update ](http://www.aspose.com/community/files/51/.net-components/aspose.network-for-.net/entry220477.aspx).

This message was posted using Notification2Forum from Downloads module by aspose.notifier.

5

Can you tell me how I should be saving the MapiMessages? I wasn't sure which fix you meant.Is this how I should be doing it?

foreach (MapiAttachment attachment in msg.Attachments)

{

subcount++;

if (attachment.ObjectData != null &&

attachment.ObjectData.IsOutlookMessage)

{

// get output file

string attachmentName = string.Format("{0}.eml", subcount);

string emlAttachmentFilename = string.Format(

"{0}\\{1}",

attachmentFolder,

attachmentName);

using (FileStream fs = new FileStream(

emlAttachmentFilename,

FileMode.Create))

{

// get message attachment

MapiMessage attMsg = MapiMessage.FromProperties(

attachment.ObjectData.Properties);

MailMessageInterpretor mi = MailMessageInterpretorFactory.Instance.GetIntepretor(

attMsg.MessageClass);

mi.Save(attMsg, fs, MessageFormat.Eml);

}

// convert eml to msg

string msgAttachmentFilename = emlAttachmentFilename.Replace(".eml", ".msg");

MailMessage emlMessage = MailMessage.Load(emlAttachmentFilename, MessageFormat.Eml);

MapiMessage msgMessage = MapiMessage.FromMailMessage(emlMessage);

msgMessage.Save(msgAttachmentFilename);

//File.Delete(emlAttachmentFilename);

}

6

Hi,

Yes, Please use the same method as you mentioned to save the embedded msg.