Mail app showing unread messages

Here are some examples of how a mail app can show unread messages:

Simple List

• Unread (3)
  • John Smith (2)
  • Jane Doe (1)

Badge

• Inbox (3)

Notification

• You have 3 unread messages!

Summary

• Unread messages: 3
  • John Smith (2)
  • Jane Doe (1)

Card-based layout

• Unread (3)
  • John Smith (2)
    • Subject: Meeting Invitation
    • Date: Today
  • Jane Doe (1)
    • Subject: Urgent: Project Update
    • Date: Yesterday

Swipeable list

• Swipe to mark as read
  • John Smith (2)
    • Subject: Meeting Invitation
    • Date: Today
  • Jane Doe (1)
    • Subject: Urgent: Project Update
    • Date: Yesterday

These are just a few examples of how a mail app can show unread messages. The design and layout can vary depending on the app's style and user interface.