Love file sent with email message (10)
I believe the answer is:
attachment
This clue is a double definition.
'love' is the first definition.
(attachment is a kind of love)
'file sent with email message' is the second definition.
(as in an email attachment)
(Other definitions for attachment that I've seen before include "Affinity" , "what might accompany 50 [EMAIL]" , "Fond regard" , "Liking" , "Means of securing" .)