Should I put two stamps on my letter?

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Tags

1. #envelopes
2. #cents
3. #generally
4. #ounce
5. #paper
6. #speaking
7. #oversized
8. #costs
9. #envelope
10. #regular
11. #letter
12. #first
13. #means
14. #class
15. #paying
16. #stamps
17. #using
18. #stamp
19. #rigid
20. #pages
21. #heavier
22. #example