Much better to skirt the email pile-up! (5,4,4,2)
I believe the answer is:
thats more like it
'skirt the email pile-up' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'much better' is the wordplay.
'much' becomes 'thats' (I can't justify this - if you can you should believe this answer much more).
'better' becomes 'more like it' ('that's more like it' is used to show approval).
'thats'+'morelikeit'='THATS MORE LIKE IT'
'to' is the link.
Can you help me to learn more?
(Other definitions for thats more like it that I've seen before include "Recognition of improved correspondence" , "said to encourage you" , "It's much better!" .)