I don't know if this is V5 Feedback or if this is carryover from a previous feature, but one problem that I am having is with Newsletters going to my guild's spam folders. Moreover, I have been told by many people that because the email address is "firstname.lastname@example.org", many of them simply deleted the messages for weeks until they realized it was from their guild.
Second, you cannot post multimedia links in the newsletter.
Sean Biggs commented
I'm glad to see this is under review. Has there been any update on this feature since December?