When you trying to send executable file with Gmail, you found this type error.
“Filename.exe is an executable file. For security reasons, Gmail does not allow you to send this type of file.”

Means you can’t send executable file. But if you convert .exe extension into some other extension likes (.Jpg, .bmp, .mpg, .mp3)and then you can send this file easily.

Open Command prompt (windows Logo + R type Cmd and then enter)

Example:
D:\>rename filename.exe filename.jpg
Now your file extension change in .jpg and you send this file with Gmail. If you want to use this file, first changes file extension again in .exe.
D:\>rename filename.jpg filename.exe

How to change file Extension in Windows vista

Tags: gmail, google