If you have WINZIP / WINRAR installed on your machine ….
RIGHT CLICK > ADD TO ZIP (or Archive)
rename the file if required if not the file will the called the same but with a .zip.
Then all you will need to do is attach the .zip into the email and send it.
Be warned that most mail systems have restrictions on size etc and also some restrict what can be sent. if the file .zip) is below 1Mb you should be OK – up to 10Mb you will probably get through. Above this you might get blocked or denied.