RC4 has been out for a while now and I am happy to say that we received some great feedback. Thanks to everyone who tried it out and posted in the forums or tracker. Several issues have been addressed and there are some changes worth noting in the code. The biggest updates are a handful of changes to address the amount of server memory Hastymail2 uses to handle a request. By moving the code into separate include files memory use has been reduced by anywhere from 1-3 MB at the cost of adding 1-2 more include files. Also attachment downloads now use a streaming model that should allow any size attachment to be downloaded without having a significant impact on memory use. Here is the full list of updates since RC4: