Over the weekend we rolled out a few changes to email notifications to better take advantage of your mail reader’s ability to group messages into conversations and threads:
Here’s what’s changed:
In-Reply-Toheaders are set for mail readers that group messages based on those attributes (pretty much everything except Gmail). GitHub notifications should take up much less real estate in your Inbox, and conversations can now be labeled, archived, and muted as a group.
These features should work similarly across a wide range of mail readers. If you notice a problem with yours, please leave a note here or open a ticket at support.github.com.
Reminder: you can customize email notification preferences for your account under the Notification Center.