what is the licence for?

it’s unclear for how long the licence will run and what it includes

This eM site may help - it is a good starting point and hope it helps answer your question. I am a new user of eM so I was poking around looking for details like this. :slight_smile:

http://www.emclient.com/purchase?lang=en

Free license - limited to use only 2 mail accounts
PRO license - unlimited, includes one year of free upgrades and VIP support.