Daily Mail's opening creating fascination (5)
I believe the answer is:
charm
'fascination' is the definition.
(thesaurus)
'daily mail's opening' is the wordplay.
'daily' becomes 'char' (I've seen this before).
'opening' says to take the initial letters.
The first letter of 'mails' is 'm'.
'char'+'m'='CHARM'
'creating' acts as a link.
(Other definitions for charm that I've seen before include "Entrance; amulet" , "Lure" , "Personal attraction" , "pleasing feature" , "Delight; magical object" .)