Every oxwall site that is successful will soon learn the limitations of the build-in mass mailing. This is a perfect alternative and works as described. Mailjet prices are also very competitiv and a good choice. The developer is fast in answering any questions and reliable. I hope we see more updates of this product soon (e.g. the possibilty to use the mailjet templates instead of the wysiwyg editor). Thumbs up for this great developer!