Windows – How to block messenger spam on Windows 8

Here's what i do as a work around:

1. Download the Win 8 Chrome app (the one that runs full screen as it's own application, not within desktop
2. Open up Google+ or Gmail, somewhere where your Google chat messages will pop up
3. Click the Pop-out button, which will open the chat in a new tab
4. Use the recent apps menu (by moving your mouse to the top left of the screen, then down) to move your Desktop app to the main portion of the screen, side by side with Chrome, and as long as you're still in the chat tab:
5. Profit.

Screenshot attached.

A Windows 8 app can reflect three different types of information to the lock screen:

• The app tile's current badge
• The text from the app tile's most recent tile notification
• Toast notifications

Up to seven apps can have a lock screen presence at once. All seven apps can show badges and toast, but only one of those apps is allowed to show the text of its latest tile notification (see screenshot below).

So the first thing to check would be whether the mail app is set as the app allowed to display detailed status. Also check whether PC settings / Notifications are enabled properly for the app. Next check whether the app's Settings pane has a Permissions / Notifications section:

Also note that only the most recent tile update will appear on the lock screen (in terms of programming, it will behave like an app tile with the notification queue disabled).