There are 2 different audiences for the newsletter-
Newsletter subscribers through the Fest website and
Attendees who registered to for the Fest
The main purpose of the first newsletter is keeping subscribers updated with the evolution of the fest- new announcements, speakers, program, and promoting the ticket sales.
The second newsletter's purpose is mainly focused with practical information about the fest. The attendee newsletter starts going out 2 months before the fest.
The process flows like this -
collect important news about the event
make rough drawing of announcements to include
draft it in the mailchimp