Designing in such a small space has its challenges. I was asked to design a solution for how users would delete messages on their mobile. This was tricky because there were certain limitations to would we could achieve technically on a mobile device. After some prototyping and mocking up designs we were able to create an elegant solution.
I created 4 different user flows to describe what should happen depending on the state of the user's inbox. This describes what should happen when there is only one message in the conversation.
This drawing says that if there is only one message left in the conversation, then automatically take the user back to their list of conversations.