Crossword Genius

What to do with envelopes, each carried by different postmen? (5,4)

Ross

I believe the answer is:

steam open

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'what to do with envelopes' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'each carried by different postmen?' is the wordplay.
'each' becomes 'ea' (abbreviation).
'carried by' indicates putting letters inside.
'different' indicates anagramming the letters.
'postmen' is an anagram of 'stmopen'.
'ea' placed inside 'stmopen' is 'STEAM OPEN'.

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