One more thing Gmail or any e-mail service not leting submit virus in .zip,.rar,.7zip formats
Not a problem .... i send samples almost evry day, using 7zip and Gmail
you have to password protect the zip before you send it
use password:
infected or
virus as these are the default passwords among the virus vendors, many auto analysis systems are able to auto extract the files if you use default passwords
also if you forgot to write the password in the mail, it does not matter if you used defaults