Needed a separate headline, but all is documented in the earlier European Colorectal Congress 2015 post. The AGB, specifically Section 8, 3.3.a, 3.4 and 3.6, are not worth the toilet roll they have been printed on.
Update Oct 28 2015: RapidMail.de have proved their spam support mightily by assigning new IPs and the use of a new domain name (rmh4.net) to ECC 2015. All listed now.
inetnum: 18.104.22.168 - 22.214.171.124 netname: RAPIDMAIL descr: rapidmail GmbH country: DE