csbrad

Hello, I am new to this forum and i am in dire need of some help. I need to make a program that will be capable of sending out a blast email to 3,000-50,000 users. I previouslly made a program that used the mail() and a while loop, and it made the server crash and or produced errors. As i have recentlly discovered many people seem to think that the mail() wont be good enough for this number of emails. I have also researched for two days on sending it with SMTP and have not figured that out yet. Does anyone have any suggestions on how to make a program capable of blasting out 3,000-50,000 emails? Thank you for reading, and thanks in advance.