Why bother? It's a non event.
I can get the Fuji Eurocolor E6 processing via Rossmann drugstore much more easily, and even a bit cheaper because there are no mailing costs.
Eurocolors mail envelope system has always been a third choice, other labs are doing it better / more comfortable.
For example Photostudio 13:
- register there, get a "Kundennummer"
- they will send you mailing envelops in which you can put more then ten films
- choose their alternative paying by "Bankeinzug", then you pay 3 - 4 weeks after you get your films back and you will even get 3% Skonto
- turn around time is much faster, only two days
- quality is better, "Hängermaschinenentwicklung" and better two-bath fixing for best archival stability
- excellent customer service, very friendly and helpful staff
There are more than 45 professional labs for E6 in Germany, and most of them are accepting send-in films via mail.
Enough alternatives.
Photostudio 13 is only one example of a (better) alternative to Eurocolor pre-paid envelops.
Cheers, Jan