Remarkable memo sent to VIP (10)
I believe the answer is:
noteworthy
'remarkable' is the definition.
(I know that remarkable can be written as noteworthy)
'memo sent to vip' is the wordplay.
'memo' becomes 'note' (I've seen this before).
'sent to' is a charade indicator (letters next to each other).
'vip' becomes 'worthy' (I've seen this before).
'note'+'worthy'='NOTEWORTHY'
(Other definitions for noteworthy that I've seen before include "Of significance" , "Signal" , "important" , "Interesting, significant" .)