Is there a one-click all in one open source solution I can use to get rid of Gmail? And by that I mean email, calendar etc. Something I can perhaps just throw

Is there a one-click all in one open source solution I can use to get rid of Gmail? And by that I mean email, calendar etc. Something I can perhaps just throw up on an S3 instance and pay a few bucks for it every month? Even if we are just talking about e-Mail frontends: Horde is one of the more popular ones and is just awful UX wise. I don't know of any mature free solution which at least tries to match GMail in this regard.