De or het mailcorrespondentie?

The correct Dutch article is:

de mailcorrespondentie

Rule Words ending in -tie and -sie: almost always de. See the rule

This word is not in the word lists we use to double-check answers.

How to use mailcorrespondentie

the mailcorrespondentiede mailcorrespondentie
this mailcorrespondentiedeze mailcorrespondentie
that mailcorrespondentiedie mailcorrespondentie
our mailcorrespondentieonze mailcorrespondentie
your mailcorrespondentiejouw mailcorrespondentie
every mailcorrespondentieelke mailcorrespondentie
which mailcorrespondentie?welke mailcorrespondentie?
a big mailcorrespondentie / the big mailcorrespondentieeen grote mailcorrespondentie, de grote mailcorrespondentie