On Wed, Mar 28, 2001 at 12:47:25PM -0800, Brett wrote:
> I remember reading that the fastest way to send one email to a large number
> of people is through bcc. This was helpful to me because I'm not able to use
> a mailing list since the addresses I send to will be pulled dynamically from
> a database which is always changing. But somehow, populating the bcc field
> with a million names seems like it might not be the best idea to me. I
> understand qmail deletes this field before sending the message out but I'm
> more concerned with whether or not it will be making efficient use of the
> queue. Is the queue even used for one message sent to numerous people or is
> it only used for separate messages? If there's a better method than bcc-ing
> everyone, I'm very open to hearing it. One suggestion I got but which I
> can't get to work is:
> cat list.txt | xargs qmail-inject -a <message.txt
> where list.txt is a list of addresses. Is this faster than bcc anyway? Any
> help much appreciated.
Bcc is indeed efficient, because it only injects one message into the
queue.
The xargs method is quite efficient, but not as efficient as the Bcc
trick. Note too that the Bcc trick is only guaranteed to work reliably
when used with qmail-inject.
Greetz, Peter.
