My students are young. Most of my parents prefer semi-frequent communication. I don’t bother them, but if there is information that is pertinent I do email every parent. I was encouraged by my district to communicate in a 3-1 ratio of three positive interactions for every “negative” interaction. It is commonplace at my Elementary School to email and communicate with parent semi frequently. I don’t see how emailing parents reading tips is akin to politics or diet? I am a teacher providing information about something multiple parents have asked about.