Sorry to hear you were having trouble downloading SmarterMail. Were you able to get it resolved when you found the .exe in the page source?
I'm having this issue looked into now... If you can offer any more details for troubleshooting that'd be great. What machine are you using? What OS are you on? Which version of Windows? Did you try on Mac as well?
Also, are you using any ad blockers on any of the browsers?