How to easily Bypass Email Attachment File Filtering

[Resistance]

I don't really see any use for this. If you wanted to share an exe you could just upload it to one of the billion file sharing sites that are free. The only applicable use for this seems to be malicious.

Thats the way you think, but you can use it for perhaps you made a prject at your friends house and you had not brought a USB drive, he emails the executable and try it at your house...