Right, Safe Mail is clearnet, which comes with certain risks that you are protected against with Tormail. The trade off is that Safe Mail has been around for at least a decade and has reliable uptime. They also provide POP access, so you can use Thunderbird + Enigmail + Torbirdy. Torbirdy will automatically configure Thunderbird to use Tor, plus it does some other things to protect your anonymity, such as changing the time zone to GMT and scrubbing metadata from the email header. Enigmail integrates PGP, so you can do transparent de/encryption of your emails. Most importantly, with POP mail, you can download your mail and store it locally, so if LE asked for your account info (the operators are in Israel or some place anyway), they would find nothing, not even encrypted emails (assuming the Safe Mail operators don't keep your email). And of course, the server logs would only show that exit nodes accessed the account.