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4.5.7   Filtering Spam During Power Nap

Keeping Your Mac Awake

In order for SpamSieve to filter your mail immediately, your Mac needs to be awake with the mail program running. Otherwise, there will be delays for iPhone spam filtering and for remote training using the drone setup. To prevent your Mac from going to sleep:

Note that even though the Mac itself is awake, you can still save energy by setting the display and hard disks to sleep. That will realize most of the energy savings while still ensuring that it completes background tasks. Modern Macs use little power when on in that state if they are not being actively used.

Enabling Power Nap

It’s also possible for SpamSieve to filter mail, once per hour, while your Mac is asleep, using macOS’s Power Nap feature. To enable Power Nap:

In order for Power Nap to work, the Mac needs to be connected to the Internet, and Apple Mail needs to be running before you put the Mac to sleep. (Power Nap does not support other mail clients, nor the Check inboxes for new messages not sent to Mail extension and Filter spam messages in other mailboxes features.) macOS will suspend Power Nap operations in situations where your Mac is likely to overheat. When everything is set up as described above, Mail can check for new messages and filter them through SpamSieve once per hour if you’re purely using the Mail extension or Mail plug-in. However, depending on your Mac and on various factors which are out of user/app control, sometimes macOS chooses not to check for new mail during Power Nap. Thus, filtering is more reliable if you leave the Mac on but locked rather than relying on Power Nap.

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