Crossword Genius

Foreign language letter to mail, perhaps (5)

Ross

I believe the answer is:

tamil

I'm a little stuck... Click here to teach me more about this clue!

'foreign language' is the definition.
'tamil' can be an answer for 'language' (Tamil is an example). I am unsure of the 'foreign' bit.

'letter to mail perhaps' is the wordplay.
'letter' becomes 't' ().
'to' is a charade indicator (letters next to each other).
'perhaps' indicates anagramming the letters.
'mail' is an anagram of 'amil'.
't'+'amil'='TAMIL'

Can you help me to learn more?

(Other definitions for tamil that I've seen before include "Sri Lankan" , "South Indian people or language" , "Language of southern India and Sri Lanka" , "Perhaps Indian" , "Native of south India or Sri Lanka" .)

I've seen this clue in the Evening Standard.
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