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I have never heard of mail opening by itself, you either have some kind of script running or an App running that wants to send an email and open the Mail App.
There is another reason it could be opened, malware but I never ever had Malware on my Mac and I use Macs for 16 years, started on MacOS 9, had OS X installed since 10.0 beta, so the chance is really really low.
I not aware of any malware opening an App either.
I am pretty sure that Apple don't distribute malware in its Sierra installer
 
13" 2016 MacBook Pro: Space Grey option, True Tone retina display with wide color gamut, USB-C, headphone jack intact, OLED dynamic function row, touch ID power button, butterfly keyboard but with more travel than MacBook, smaller footprint. $1399 starting.
 
for once in my life I didn't immediately upgrade :) May skip this one all together. Everything is working and there's nothing in Sierra that I want, so why tempt fate :)
 
While I can personally see some frustration among some very high-end users of these products, the majority of the people that start the "waiting for 'blah'" threads are really wasting time when they could be using a computer that would more than adequately meet their needs, much better than the privacy-leaking Windows 10 alternative.

Do you agree then that people (not even high-end users) wasted money on software and hardware accessories for the platform as well? you know.. because they are wasting their time asking a company (and for a while complaining) to put some effort on the line of products they use investing time and money.
 
I presume, that if Apple supports ARM it will be for the MacBooks and maybe some low-end Mac mini and that the "pro" hardware will continue running on a x86. As already referenced, the developer submits a intermediate format to the Mac App Store that is then compiled to the target architecture. Apps outside of MAS can be fat-binaries, containing both byte codes. This is something we had with PPC/x86 years ago.
 
Do you agree then that people (not even high-end users) wasted money on software and hardware accessories for the platform as well? you know.. because they are wasting their time asking a company (and for a while complaining) to put some effort on the line of products they use investing time and money.

It depends. If these people can demonstrate real world differences that are significant enough in the time=money equation, not really. Most are complaining on synthetic benchmarks and not real world uses. There are exceptions, but generally the benchmarks start these threads.
 
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