There is letter writing territory , so if you are in rural area it’s possible that’s the easiest way to try and reach people.
During COVID it was the only way we could do our ministry, as the door to door ministry was put on halt.
In addition some of the older folks who can’t do as much door t door ministry use letters as a way of participating in the ministry as well.
We try and reach as many people as possible by many means, letters, there is business witnessing, public ministry carts, phone witnessing , the door to door work etc… it’s all about love of neighbor and following Jesus command to “make disciples of people of all the nations” Matthew 28:19,20