Then they noticed the traffic from my server (I guess) and blocked my IP from scraping their site, making the app basically useless, so I just forgot about it.
Now they are telling that I'm using their trademark in a way that can make users confuse my service with theirs, that according to their TOS I can't event link to their website without authorization (am I even bound by their TOS if I don't use their website?) and so on and so forth.
It was just a side project for me, so I don't mind dropping it.
The source code is on Github though if anyone is interested (https://github.com/jfoucher/lebonmail)
See the last notable case "Craigslist v. 3Taps": http://en.wikipedia.org/wiki/Computer_Fraud_and_Abuse_Act#No...
Nevertheless: If somebody doesn't want you to scrape, don't do it.