Receiving Unusual E-Mail (all g-mail)

Hi!

For the past 2 days I've been receiving e-mail from addresses ending with...
"g-mail". For example;
someone @gmail.com
sombodyelse @gmail.com

I personally don't know of anyone who has an e-mail address ending with that. I haven't done anything different on the internet. The subject line is empty and the body of the message is empty. Is this just junk? Or should I be worried?

I ran all these and it comes out clear/current versions;
AVG AntiVirus Scan
AdAware Scan
Spybot Scan
Spyware Blaster
Microsoft Windows Malicious Software Removal Tool Scan
Microsoft AntiSpyware Scan

Thank You!

 

Thank you very much for your help.