Secure or Private Email Distribution

Seeking referral for email service or expertise on distributing email where the recipient(s) do not (or cannot) see the email addresses listed of the other recipients of the email distributed. I asked an IT employee at a local library about this, and was advised about "BCC"... (Blind Carbon Copy?) I have used that in the past when emailing a superior at work, and I understand how that works. But surely there is something better for emailing a group of recipients than "BCC'ing" each one of them... I am looking for both a specific approach to this situation, and an email service provider that works best for this type of email distribution... Help??? Any direction provided would be appreciated. And Thank You! Happy Holidays!!!