Re: Efficient mass mailings

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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

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