I have had the pleasure to work with the great crew at a Canadian environmental NGO over the last few weeks, assisting them with their broadcast email. The part of this work I enjoyed the most was creating a workshop for the campaign staff on email best practices. Download the checklists for the sessions here (PDF).
We did three sessions with this really smart and engaged crew: an introduction to their new email management system, a session on email basics (writing and designing email, as well as choosing a subject line) and finally a session on best practices around email fundraising and advocacy appeals. Of course, you can do months of study on these topics, so these workshops just touched on the basics.
You can download the quick checklists I developed for the sessions here Email-best-practices (PDF, 200K)