I have been using the Torbirdy extension to Thunderbird and GMX as my e-mail provider. It was working fine until today, when I received an SMTP blacklist message when trying to send e-mail. I tried 3 different IP addresses and they were all blacklisted. I am able to send e-mails with gmail but I would like to avoid this due to Google's mining of all data.
What e-mail providers have POP3/SMTP and would work with Tor/Torbirdy?