See Managing And Sending Newsletters From The Website for more details on the basics of the website newsletters.
Sending Upcoming Event Newsletters:
- Add a Posts Inserter block into your newsletter, in the block settings configure it as follows:
- Enable Post Subtitle
- Enable Featured Image
- Change Post Type to Calendar
- This will show a feed of upcoming events on your site. You can further edit text colors and styles, and once ready click the Insert Posts button on the Posts Inserter block in the editor. Note that this is an irreversible step, you will have to add a new Posts Inserter from scratch if you want to change settings.
- Clicking Insert Posts will transform the feed into regular email content which you can edit as normal, group and add color behind, and more.