I chose registration method, send email verification, and not send email
forum admin panel >> configuration >> mail settings
which Mail Handler is used ? is Mail Logging set to log everything ?
forum admin panel >> tools & maintenance >> System Mail Log
do you see any logged entries ? if so, post a couple of the entries.
Mail handler > PHP mail
Mail Logging > log everything
forum admin panel >> tools & maintenance >> System Mail Log
do you see any logged entries ? if so, post a couple of the entries.
System Email Log
Error Message > MyBB was unable to send the email using the PHP mail() function.
contact your web host & ask to enable php mail. or if your web host provides smtp mail then you can try using it