Many of the free hosting websites disables mail() function in PHP... Why they diable this function... Is there any security problem enabling this service... www.000webhosts.com enables this function in free hosting too.. But the problem is, cant able to create a domain domain.. Full time some errors... In forum many of the customers have complained about server down.. Always want to enter through proxies... When we send a mail using mail() function in PHP, what will be the senders address show on receiving point... There is optional parameters to add from address.. As said above, optional can be avoided... That time what will be the senders details... It think it may be something like firstname.lastname@example.org... Am i correct?