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... we are a German company and has hard law rules. The app is easy to handle and works well. Very important this app does really support the Double-Opt-In feature. This is the only app which support this feature correctly at the moment (10stars for this feature). I found no other app with this feature. The support will be done always quick and with a high quality. Also, the other tools which this company offers are very very good designed. For example the Review tool. It is absolutely implemented in a profession was. (but no multi language support is implemented at the moment). Nevertheless i found a workaround for my 20 installed languages within emails. Norbert