Cant receive email, sent from php mail()

Website Building
#1

hi, have a problem with receiving email from my php script using mail() function, it works at the first day of try, i have sent like 20 emails and then i try to send email again it return true, but i dont receive any email until now, whats the problem? pls help, thanks

ps: i am using free hosting.

#2

Could be in a queue give it a while if you are likely to be sending a lot of emails I’d recommend premium.