Neither is putting all the addresses in the To:. It's ugly, and revealing all the names and contact details is ugly, too.
Fortunately, sending an email to all the addressees while keeping their addresses hidden is easy in Opera.
Create a Contact for Undisclosed Recipients
To set up an address book entry that helps you address "undisclosed recipients":
- Select Tools | Contacts from the menu in Opera.
- Click the Add button.
- Type "Undisclosed recipients" under Name.
- Put your own email address in the E-mail address field.
- Click OK.
Send an Email to Undisclosed Recipients in Opera
To compose an email message to undisclosed recipients in Opera:
- Start with a new message.
- Begin typing "undisclosed" in the To field and pick the "Undisclosed recipients" entry from auto-complete.
- Add all desired recipients under Bcc.
- Separate addresses with commas ("email@example.com, Tim <firstname.lastname@example.org>", for example).
- You can click Bcc to add contacts from your address book easily.
- Note that most email services will not allow more than 50, 20 or maybe just 10 recipients per message. If you run into problems, or if your list exceeds some 50 people, you can use a group email service instead.
- Enter a subject and compose your message, then click Send.