PHP: Send Email via cronjob and set amount of email send per mins

Question

i have a program which use to send group emails, i set a cornjob per mins for this program, and set execute per 2nd/min, and check if the now time is match to my defined schedu

Answer 1

its only example to said 3 emails per mins actually i want to give user to set the amount of sending email per min/ per hour/ per second

and i know about the send email program, but what if mutil task doing.. such as 3 newsletter will blast at 20/3/2009 15:15:00; each of those target to 10000pls

i dun want to save the whole blast list in db, since client may import a email list for 40000 ppls, always timeout when import, even i set the time limit to 2 mins, dun want to take more then that time

so do u have any sugeestion on the email sending?