Messages revealing English maiden is unwell (6)
I believe the answer is:
emails
'messages' is the definition.
(I have seen 'Electronic messages ' mean 'emails' so perhaps 'messages' could also mean 'emails')
'english maiden is unwell' is the wordplay.
'english' becomes 'e' (abbreviation).
'maiden' becomes 'm' (cricket abbreviation).
'is unwell' becomes 'ails' ('ail' can be a synonym of 'be unwell').
'e'+'m'+'ails'='EMAILS'
'revealing' acts as a link.
(Other definitions for emails that I've seen before include "Electronic messages" , "Computer communications" , "Electronic communications" .)