Fizzy drink somehow emailed (7)
I believe the answer is:
limeade
'fizzy drink' is the definition.
(I've seen this before)
'somehow emailed' is the wordplay.
'somehow' indicates an anagram.
'emailed' is an anagram of 'LIMEADE'.
(Other definitions for limeade that I've seen before include "it's a soft one" , "Fizzy drink" , "Citrus drink" , "Fruity drink" , "Non-alcoholic beverage" .)