RockClimber wrote:

I receive e-mails in HTML format with photos in-line; i.e.,
intermixed with text. In Outlook Express the photos show up
correctly but in Outlook they are listed as attachments and I have to
click on each one individually to view it.

That means they were not included in line but in actuality were attachments.

It's not 100% of the time
-- seems that this behavior depends on the number of photos attached.

Not as far as I know. It has to do with how the sender included them.
--
Brian Tillman