You can bcc everyone instead of putting the email addresses on the To line.
If you're using Outlook as your email editor, create a new message as you
normally would, then click the View menu, click Bcc. If you use Word as your
editor, click the drop-down next to Options, and click Bcc.
When you send your message, you can either put your email address on the To
line and bcc everyone or leave the To line blank.
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