Even if you get the account created it will tend to self-lock after a short time and ask for SMS verification.
Email services that don't SMS verify on VPN or TOR endpoints usually find themselves on anti-spam blacklists sooner rather than later. Spammers are constantly on the lookout for email services that don't have trashed reputations to get around Gmail and other provider's filters.
It must've been some time ago, then, because they now require an SMS (your phone number), a donation, or another e-mail account.