You can now enter a country code as part of the address for your congregational families.
In most cases, you likely do not want to designate a country. That is, if the mailing address is in the same country as your synagogue, it is best to not designate a country.
In contrast, let’s say that your temple is in a northern climate in the United States, and you have a family or two with a winter home in Costa Rica. You would want to designate a country (CRI in this example) for that seasonal address. Or the opposite–your congregation is in Florida, and you have folks with a Canada address, either as their primary or seasonal address. You’d put CAN as a country code.
If the system sees a country code, it will print a separate line on envelopes and labels to show it.