Thanks to those who have replied so far, yes our main concern is the
smtp server falling over or dying. So to come back to John
Nichel's answer:
John, have you done this personally and I assume the effects were
good?? IE everything ran smoothly?
I have done it just as John has described above, though I didn't have 8000
to send. All went well, no hiccups. A couple of things I would mention is
that I seem to remember reading somewhere that the sleep() function on
Windows eats a lot of processor. Not an issue for me since I'm on Linux,
but worth a mention. And the function John suggested above will take over
22 hours to send 8000 emails. Since you say its a one shot deal, its
probably OK.
I don't think the long running script with sleep function is the best
approach to this problem. I would recommend writing the whole queue
somewhere (to database) and run script every 5 minutes, load some not
sent yet e-mails (100), send them and write info (it_was_sent tag) back
to database.
It's always better to not have long running script, you never know what
can go wrong and if it fails somewhere or process is killed or machine
rebooted or something happens, you don't know which emails were sent and
which not. And there's no stupidest thing as sending the same company
newsletter twice to the same client.
Petr
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