Will forever stamps still work in 2019?

Related questions

1. Does Canada Post deliver parcels on Saturdays?
2. How do I contact NZ Post?
3. Are parcels delivered on Saturday?
4. Does Post deliver on a Saturday?
5. How long will my post take to arrive?
6. Are postage rates going up in 2019?
7. How long does a letter take NZ?
8. Is Priority Mail Express overnight?
9. Is NZ Post government owned?
10. What is first overnight vs Priority Overnight?

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21. #product