Overview
You can filter any of your inbox tabs to show only unread messages, so nothing sits unanswered without you noticing.
You can also mark a conversation back to unread once you have opened it, which works well as a to-do marker.
Steps
Step 1: Open your inbox and choose a tab
Open your Inbox and choose which tab to check — External, Internal, or List Stacking.
Unread filtering works the same way on each.
Step 2: Add a filter
Click Add a Filter.
Step 3: Filter by activity status
Under the parameters, click Activity Status.
Select Unread.
You can add other parameters as well, but if unread is all you need, this is enough.
Click Continue.
Step 4: Save it or use it once
Save the filter if you will check unread messages regularly
Apply without saving for a one-off
Step 5: Spot unread messages
Your inbox now shows only unread conversations.
A green circle beside a message means it is still unread.
Step 6: Mark something as unread
If you have opened a conversation but want to come back to it:
Click the three dots on that conversation.
Click Mark as Unread.
Important Notes
The green circle is the unread indicator, so you can spot unread items without filtering at all.
Saving the unread filter is worth doing if this is part of your daily routine.
Mark as Unread is a useful to-do marker. Opening a message you cannot deal with yet does not have to mean losing track of it.
The same filter works on the External, Internal, and List Stacking tabs.
Troubleshooting
You cannot find the unread filter
Click Add a Filter, then choose Activity Status from the parameters, then Unread.
A conversation disappeared from your unread list
Opening a conversation marks it as read. Use the three dots and Mark as Unread to put it back.
You are checking the wrong messages
Check which tab you are on. External, Internal, and List Stacking each have their own conversations.
You want this filter every day
Save it rather than rebuilding it each time.
Summary
You filtered your inbox for unread messages. You opened the tab you wanted, clicked Add a Filter, chose Activity Status and Unread, and either saved the filter or applied it once. You spotted unread items by their green circle, and used the three dots and Mark as Unread to flag a conversation to come back to.