De or het spamvrij?

The correct Dutch article is:

de spamvrij

Rule Words ending in -ij and -erij: usually de. See the rule

How to use spamvrij

the spamvrijde spamvrij
this spamvrijdeze spamvrij
that spamvrijdie spamvrij
our spamvrijonze spamvrij
your spamvrijjouw spamvrij
every spamvrijelke spamvrij
which spamvrij?welke spamvrij?
a big spamvrij / the big spamvrijeen grote spamvrij, de grote spamvrij