Working on emails — it’s part of the grind (8)
I believe the answer is:
semolina
'part of the grind' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'working on emails' is the wordplay.
'working' indicates an anagram.
'on'+'emails'='onemails'
'onemails' with letters rearranged gives 'SEMOLINA'.
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for semolina that I've seen before include "Wheat powder" , "A lemon is used in the pudding, strangely" , "dessert" , "Hard grains of wheat in puddings and pasta" , "Milled wheat product" .)