I would like to send with each customer mail for a specific event (in this was "order shipped") a email in bcc (this triggers an automatic email for shop reviews 7 days after that mail). But where can I do this?
It will let you send a transactional email some number of days after an order is changed to specified statuses. It also handles form inquires, new profiles, abandoned carts, etc.
You can enable/disable whatever features you want and not setup any automatic admin tools. You might find over time that you use more and more of it's features if you are interested in regularly maintaining your site. Hard to spend less and have so many options....