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You may add files with using online storage
This services are a repository for large amounts of information, including documents, music, videos, photos. In addition, they allow you to share information easily just by sending a link. Thus, each recipient will have access to your file. Read this article to learn how to use online storage services, such as Google Drive, for example.
Changing the file extension
If you can’t use Google Drive, you can use this method. It was already mentioned that Gmail does not like exe-files, so change the extension.
NB: Don’t forget to ask your recipients to add the extension back after they load them. Thus, the program will work fine.