[apb123]

I use Mail Tags and Mail Act-on. Use mail Act-On to assign a tag to the email for example "To Reply". Then use the Clip O Tron to add an Omnifocus action. Then archive the email.

I use smartgroups to look for certain tags in mail. For example "To reply" or "Do Today". Then I can actually see what to do out of mail but still keep a zero inbox. Also in Omnifocus I can connect to the original email because it is archived.

I know this is a hybrid between MailTags and Act-On and Omnifocus . However it works for me.