De or het mailafwisseling?

The correct Dutch article is:

de mailafwisseling

Rule Words ending in -ing: almost always de. See the rule

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

How to use mailafwisseling

the mailafwisselingde mailafwisseling
this mailafwisselingdeze mailafwisseling
that mailafwisselingdie mailafwisseling
our mailafwisselingonze mailafwisseling
your mailafwisselingjouw mailafwisseling
every mailafwisselingelke mailafwisseling
which mailafwisseling?welke mailafwisseling?
a big mailafwisseling / the big mailafwisselingeen grote mailafwisseling, de grote mailafwisseling