[MlMt] MailMate did not synchronize in the background

[John Cooper]

Benny,

**What's New in OS X: OS X Mavericks 10.9** says all that I know about 
AppNap clearly and simply:

> App Nap reduces power consumption by completely suspending your 
> app’s execution when it meets certain criteria. This ensures that 
> your app does not periodically wake up to do unnecessary work. An app 
> is considered to be a candidate for sleep if:
>
> - It is not visible—if all of an app’s windows are either hidden 
> by other windows or minimized in a hidden dock, and the app is not in 
> the foreground
> - It is not audible
> - It has not explicitly disabled automatic termination
> - It has not taken any power management assertions
>
> When all of these conditions are met, OS X may put the app to sleep. 
> While asleep, the app is placed on a scheduling queue that rarely gets 
> actual time on the CPU.
>
> The app wakes up automatically when the user brings the app to the 
> foreground or when the app receives a Mach message or Apple event.

Because I like to have MailMate open all the time, but don't like to 
have windows open that I'm not actively using, I generally hide MailMate 
after using it (expecting the menu bar counter to alert me of incoming 
messages). That meant that all four of Apple's conditions were true, and 
at some point OS X sent MailMate to sleep.

On 26 Feb 2014, at 3:58, Benny Kjær Nielsen wrote:

> On 25 Feb 2014, at 23:47, John Cooper wrote:
>
>> I thought of AppNap, but I didn't know how to turn it off for 
>> MailMate. (You have to open a Get Info window for the application 
>> package and select the **Prevent AppNap** checkbox.) I've done that 
>> now, and I'll bet it solves the problem.
>
> Let me know when you have a conclusion on this. **Embarrassingly** I'm 
> still not on Mavericks on my development machine and I still have 
> little experience with AppNap.
>
> -- 
> Benny
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