Sweetleaf Mail 2.6.7 error, please MAKE SURE that '/home/.sites/106/site388/web/_private/mail_list' is a directory (NOT a file) and that Mojo Mail has enough permissions to write into this directory: No such file or directory at /MOJO/Guts.pm line 658.
For help, please send mail to this site's webmaster, giving this error message and the time and date of the error.