The scope of the issue can be wider that I describe as I share only what I've learned from Russian users. **So what is expected:** a users sends an email with OS name to gettor@torproject.org and gets back an email with link where they can get Tor Browser **What happens:** While it works for GMail address (I tested that), for Russia-based email services (tested for Mail.ru (by user) and Yandex.ru (by me)) instead of links user gets back the same email with the list of OS to choose from. I'm not sure if only affects Russia-based emails, it is just where I tested the issue cc/ @meskio @gus