Worst company I have ever dealt with. First dealt with them 10+ years ago and when I transferred out a domain from them it took about 6+ months for the process to complete. Eventually I thought everything was done. About 5 years later I got a call from collections harassing me that I owe 1and1 money. I owed 1and1 $1 and collections added a $9 fee so I had to pay $10. Bunch of a holes. Collections was swearing at me like I owned a million dollars.
This year, after swearing I would never use 1and1 I went in for the free .com registration. I registered a .com and after 2 weeks it still wasn't registered. I started reading up on them and people say they get tons of spam from 1and1 after registering. I was furious (due to my past experience and 2 weeks of not registering my account) and I message 1and1 to delete my account and never share my information with affiliates etc.
So far so good, but I wouldn't put it past 1and1 as they are shifty as hell. Not sure how they still exist as there is millions of horror stories from people since they were founded.