Smartgreet - start-up, service of the unique congratulations

We developed and launched MVP of the project (minimum value product) to
check whether the idea work. The essence of the service is to generate own
greeting card with unique content for each of 10 000 contacts in the large
clients base. We expect that at first, this service of interest to
corporate clients who have loyalty programs. Plus, these greetings can be a
source of the up-sales, as in addition to a card of congratulations have
been attached special offer.
We are faced with many challenges in this project: to make convenient and
simple admin panel for creating newsletters, make parsing content to
provide fast mass mailing and more.