Preventing undisclosure of mail recipients

[lobobr]

Greetings.

I'm writing a simple code that enables a user of my system to send multiple e-mails.

I'd like to make this possible without using the "To:" - using only Bcc's in the header - variable of mail(), so each user can't see the other users email adresses.

There are 2 problems:

1 - I can't do it without filling $to with something
2 - I don't want anybody else to receive the e-mail

Is this possible?

Thanks in advance,

[barand]

If you are forced to put something in $To then put the senders email address.

[lobobr]

Thanks for your reply and excuse me, please, I was making a mistake.

In fact I can send an empty string to the "To:" field, there is nothing that prevent that.

I've just corrected my code and it works.

Thanks again,