- field(:id, :string, primary_key: true)
- field(:to, {:array, :string}, default: [])
- field(:cc, {:array, :string}, default: [])
- field(:bto, {:array, :string}, default: [])
- field(:bcc, {:array, :string}, default: [])
+ field(:id, ObjectValidators.ObjectID, primary_key: true)
+ field(:to, ObjectValidators.Recipients, default: [])
+ field(:cc, ObjectValidators.Recipients, default: [])
+ field(:bto, ObjectValidators.Recipients, default: [])
+ field(:bcc, ObjectValidators.Recipients, default: [])