How long do Snapchat messages last?

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Tags

1. #settings
2. #unopened
3. #hours
4. #opened
5. #messages
6. #delete
7. #servers
8. #designed
9. #erase
10. #rules
11. #snapchat
12. #snapchatters
13. #chats
14. #changing
15. #after
16. #automatically