The e-newsletter is primarily a sent by email, although it may from time to time Include additional “news” items.
There are two types of e-newsletter being proposed:
(1) A monthly email listing all new titles being published in that month; and
(2) An email for each new title sent to all subscribers with an interest in the title’s subject area.
The differences are in content and subscriber lists, and for the purposes of these specs, the term “newsletters” refers to both types.