De or het mailapplicatie?

The correct Dutch article is:

de mailapplicatie

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 mailapplicatie

the mailapplicatiede mailapplicatie
this mailapplicatiedeze mailapplicatie
that mailapplicatiedie mailapplicatie
our mailapplicatieonze mailapplicatie
your mailapplicatiejouw mailapplicatie
every mailapplicatieelke mailapplicatie
which mailapplicatie?welke mailapplicatie?
a big mailapplicatie / the big mailapplicatieeen grote mailapplicatie, de grote mailapplicatie