newsletter /mass email system

how to design a good mass email system

[sid_o]

Hi,
i wish to add to my site a monthly newsletter option.
what is the best way to send mass emails without being flagged as a spammer from my server & not overloading it.

[joelgreen]

Welcome to WebmasterWorld sid_o!
Divide all emails into chunks, and send each chunk separately. You'll need to put some pause between chunks. This can be accomplished using cron jobs or by creating php mailing script.

Try searching for newsletter scripts. Some are free. Some of them would have features you need.

[sid_o]

Hi, joelgreen
thanks for the reply,

i am not using cron jobs, so how can i cut the emails to chunks?
i will search for newsletter scripts,
Cheers

[joelgreen]

I meant put a sleep between chunks.

For example you need to send 100 emails, and your hosting provider allows only 30 per hour. So you'll have 4 chunks (30 + 30 + 30 + 10).

Something like this (simplified)

for ($i=1; $i <= total emails; $i++) {
mail (...);
if (sent whole chunk) sleep(until next hour).
}