After I've upgraded to Yosemite, I've started to receive email alerts about upcoming events from my Calendar. This is a typical email Return-Path: <my-email@gmail.com> Received: from [192.168.100.245] ([113.163.117.148]) by mx.google.com with ESMTPSA id gz1sm18613666pbb.8.2014.11.03.21.00.03 for <my-email@gmail.com> (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 03 Nov 2014 21:00:04 -