I’ve gotten one of these emails as well. No idea what the story is behind it.

I get these a lot.
you can see where they’re coming from by clicking on the down arrow next to the reply button on the top, and choosing show original. you can see which address it was from.

@fsimpro –
It can be traced out even by having a look on its header.

even if ‘show details’ is activated (as shown in the above screencap), there are NO details shown, ie, sender, subject and body are null. i often get these in my gmail Spam folder. gmail’s spam filters seem to get it right most of the time though, it’s rare that i see any spam in my Inbox, but there’s always lots of it in the Spam folder.

I get these in my inbox every day. At first I thought they were spam and just deleted them. Then I got brave (or stupid)and opened one up. They are legitimate messages from friends or companies I know. Why are they coming through as (no sender) (no subject)? One of these was even a reply to a message that had a subject. When they come through they have all of the coding imbedded making it very difficult to read the actual message.

I found another blog that speaks to this issue and gives a link to gmail support and wording to use when filing a problem report.

Here’s a link to the blog:
http://groups.google.com/group/Gmail-Help-Reading-Messages-en/browse_thread/thread/b4bdc89bdec1d75/07c7d743a6956781

They all seem to think it is happening when mail is being forwarded from Yahoo. That could be the case with me.

aaah I had one of these types of email just now, I think sometimes it is when you go to compose ‘New’ mail – in my case I went off this page by clicking on my Inbox hence why I found it has turned up in my deleted folder. I hadn’t finished typing my email and so hadn’t given it a subject or sender. :S DOH!

I keep getting those too in Gmail. The body of the message is a bunch of unreadible gibberish. I just mark it as spam