Cloze includes a field called "Household" for each person that is used when generating labels for postal mail.  

If two people have the same address and same household name Cloze only exports one address label (removing the duplicate).

For example:

Person 1

  • Name: Beatrice Baudelaire
  • Address: 151 Forest Street, Wellesley, MA, 02481 US
  • Household Name: The Baudelaire Family

Person 2

  • Name: Bertrand Baudelaire
  • Address: 151 Forest Street, Wellesley, MA, 02481 US
  • Household Name: The Baudelaire Family

This will generate one address label for the entire family:

The Baudelaire Family
151 Forest Street
Wellesley, MA, 02481 US

Tap on edit next to the person's name to add the household name.