Jokes I text after John receives extremely impertinent note (10)

'jokes' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Perhaps there's an association between them I don't understand?

'i text after john receives extremely impertinent note' is the wordplay.
I cannot really see how this works, but
'i' is found in the answer.
'text' could be 'sms' (abbreviation for Short Message Service) and 'sms' is found in the answer.
'note' could be 'ti' (musical note, as in do re mi so fa la ti do) and 'ti' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?