I was taught from an early age to say please/thank you, excuse me etc and I raised two boy's the same way.
If they receive a gift in person, their thanks are immediate and if sent something, they will call, text, email or send a letter....both are now in their 40's.
I think it goes further though...if they are visiting and I make tea/coffee for them, I'm thanked and I do likewise at their homes. However when visiting friends etc, it's something I rarely hear!
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