Slowing down the sending speed

Question: If I change the number of simultaneous SMTP connections in 1st Mass Mailer to the lowest value and make program wait for 10 seconds after each message sent, will that slow down the number of messages sent out?

Brief Answer: Yes it will (just making number of SMTP connections to 1 should theoretically be enough), but it will be very slow.

Answer: Yes it will (just making number of SMTP connections to 1 should theoretically be enough), but it will be very slow. Doing that beats the purpose of multithreaded sending engine. That is because it will only be using one thread thus it will be sending one message every 10 seconds in total.

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