Have an already existing userbase and just want a mailing list (aweber type thing) so can email them updates and so forth. This isn't a "lets email them some make a million dollars overnight program" type list. However, aweber requires double-opt in (which all members already are anyway) which means that it has to be triple-opt in, which is absolutely ridiculous. Know of any mailing lists that can work alongside our existing double-opt in, so once they verify their account they're added to the list?