Hey Robert, we do have incoming fixes for attachments in MAPI.  They should make it into the next release.  However, if you're able to, you could messages me the raw content of the email and I can debug the issue directly to see if it's been fixed.  Otherwise, the next build might resolve the issue.

Not just MAPI, we also have users reporting attachment issues Outlook using IMAP. Outlook shows there is an attachment, but shows no attachments.

Robert was able to get me his email and we did find additional issues that will be in the next build.

In regards to IMAP, these fixes would apply to it as well.  The bug fix was a fundamental back-end change not particular to one type of protocol.

Note that this still exists in the current beta. Outlook shows there is an attachment, but doesnt show any attachments to select / open.

Hey Chris, do you have an email you can send my way that I can debug against?

Dm'd you Larry - This appears to only affect MAPI.