Communications that may bring a smile (6)
I believe the answer is:
emails
'communications' is the definition.
(email is a kind of communication)
'may bring a smile' is the wordplay.
'a smile' can be anagrammed to 'EMAILS'.
However, I am unsure how the anagram is indicated.
'that' acts as a link.
Can you help me to learn more?
(Other definitions for emails that I've seen before include "Electronic messages" , "Computer communications" , "Electronic communications" .)