I get some properties from each MailItem in some folder:

_ItemsPtr spItems = spFolder-Items;
for (int j = 0; j spItems-Count; j++)
{
_MailItemPtr spMailItem = spItems-Item( j+1 );
if ( !spMailItem )
continue;

// SenderEmailAddress, SenderName, SentOn, Subject and Recipients
properties reading here
}

But this code is very slow. Only 130 messages per second even without
reading any properties.

How can I speed up mail items processing greatly? I need to process
thousands of emails...

Thanks.

I've tried out this using ExMAPI - speed was increased greatly.

Have a look at the Items.SetColumns methods.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"Ivan" wrote in message
...
I've tried out this using ExMAPI - speed was increased greatly.

Thanks, Dmitry!
When I tried to use this method in OOM it always returns null. I don't know
why.
Using MAPI, IMAPITable.SetColumns works fine.

I am not sure what you mean - SetColumns in OOM does not return anything; it
simply tells Outlook which properties you are planning to access later from
the Items collection so that Outlook can make sure these properties get
cached from the underlying MAPI table.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"Ivan" wrote in message
...
Thanks, Dmitry!
When I tried to use this method in OOM it always returns null. I don't
know
why.
Using MAPI, IMAPITable.SetColumns works fine.

Sorry for the confusion. I mean that after calling SetColumns in OOM every
returned item from Items collection is null.