Chris Boulton Wrote:The reason that they may have not received the email is that their email address could be wrong, there could be mail problems with your server (even temporary ones), the email is still in the mail queue, or for some reason it has been classed as "junkmail" on his side.
Bruce Wrote:Some mail servers have strict spam filtering, sometimes the message dose not even apper in the junk mail box. Try to re-send the activation mail, if that dose not work you can activate the acount manualy in the admin cp.
Chris Boulton Wrote:MyBB uses the mail() function in PHP which is actually just sends the email. It could be an issue with the mail settings in php.ini or the mail daemon on your server.