Richard Heyes wrote: >> Whether you BCC or not does not affect the actual mail-server >> traffic. A Bcc'ed address is only one that isn't listed in To: >> header. > > But it does affect how much data gets transferred to the mail server. > If you Bcc: addresses the email will only be sent over the wire to the > mail server once. Sometime last night I realised my previous answer was bogus. Whether or not you use Bcc does not change anything wrt. the amount of data transferred. You send the mail like this: sendmail -oi <rcp#1> ...<rcp#999> <<XXX . . . . . . . XXX Any <rcp> not listed in the 'To:' header is a Bcc address. Your MTA couldn't care less whether you've got 'To:' addresses or not, so the email is transferred in the same manner with them or without. /Per Jessen, Zürich -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php