Message from Peel: it's garbled (7)
I believe the answer is:
epistle
'message' is the definition.
(I know that message can be written as epistle)
'peel it's garbled' is the wordplay.
'garbled' is an anagram indicator.
'peel'+'its'='peelits'
'peelits' is an anagram of 'EPISTLE'.
'from' is the link.
(Other definitions for epistle that I've seen before include "Apostle's letter" , "extract of the Bible" , "Writing" , "A letter from St Paul" , "Romans perhaps" .)