We send out a bulk thing like once or twice a year if there are a bunch of things going on. I think you might be able to create you own custom newsletter/report for the content you're interested in, but I've never messed around with that stuff. Email is broken though, so no newsletters for right now.
Also, "newsletter" is code on the internet for "excuse to send folks content for the purpose of reminding them we exist and is actually for our benefit and not yours" so with that in mind, everyone should most certainly accept newsletters and whitelist our email address, particularly if you're prone to forgetting to visit until you forget we exist.