This is a great list. May I bring your attention to Helpmonks — http://helpmonks.com?
Helpmonks is the ridiculously easy way to keep your team email organized. Something I’m sure some of your readers will love.
We do have paid accounts, however, Helpmonks has a free account for one shared inbox with three users. Additionally, Helpmonks is free of charge for any open source project or non-profit organization.
Monday February 9, 2015