How can I see the current Database Mail configuration?
+1 to @jsauni for the wizard

You can also use the following system functions.

EXEC msdb.dbo.sysmail_help_configure_sp;
EXEC msdb.dbo.sysmail_help_account_sp;
EXEC msdb.dbo.sysmail_help_profile_sp;
EXEC msdb.dbo.sysmail_help_profileaccount_sp;
EXEC msdb.dbo.sysmail_help_principalprofile_sp;


The wizard is probably easier to follow but these will give you everything at once without having to go back and forth through the wizard.  I find it a bit cumbersome. :)