Mail() vs SMTP?
I dont know why I can not use mail() function on my hosting and I must use SMTP instead. I am wondering which use less server resource? I know for sending several emails, i would not care much about that but I am talking about sending hundreds, thousands or even more of email in short time (1 hours or can be 1 day). Which have more impact on server load/system performance? What is the best configuration for sending mail in that case?
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Any help?
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