People given messages, possibly sadder notices (10)

I believe the answer is:

addressees

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'people' is the definition.
(addressee is a kind of person)

'possibly sadder notices' is the wordplay.
'possibly' is an anagram indicator.
'notices' becomes 'sees' (to notice is to observe or see).
'sadder' anagrammed gives 'addres'.
'addres'+'sees'='ADDRESSEES'

'given messages' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Another definition for addressees that I've seen is " Group getting letters".)

I've seen this clue in The Times.

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