I have an opt-in email list of ~200.000 adresses, however I cannot prove that the list is opt-in and that I have generated it. Sadly most email services seem to be very strict about that, at least thats what I have read so far, and require you to provide proof ownership if you suddenly come with such a big list. I am new to email marketing, therefore I would appreciate it if you guys could suggest me a service a la mailchimp, aweber & co that doesn't require me to prove anything & has a good inbox rate. The list is high quality and targeted, there should be no problems with spam-rate etc. Thanks.