The leagues we serve often have information that referees need to know about, sometimes on short notice. They expect me to convey this information to my referee partners. I can’t possibly call over 300 referees and many referees still don’t have text messaging. Therefore, the only effective method of communication is email.
I also use email to convey information to referees including announcements, changes, tournaments, meetings, unfilled referee positions, etc. I understand that every announcement isn’t important to you. That’s what the delete key is for. However, you’ll never know if you haven’t opened and read the email.