If your school, company, organization, etc. regularly sends emails to a list you maintain, here are the two most important questions to consider before you hit “Send.”
1. Did the recipients specifically ask for this email?
That’s a different question than “Did they provide you with their email address?” You don’t like getting spam, and neither do the people you’re about to email.
2. Is this information they want to receive, or just information you want to send?
Just because it’s important to you (your announcement, news, sale, etc.) doesn’t necessarily mean it’s important to them.
Put yourself in their shoes before you put your email in their inbox.