Members of the Duggar family starring in "Jill and Jessa: Counting On" are quite a busy bunch and as such are not always available to go to every birthday party or wedding their fans invite them to.

This is what Rebecca Schumann from the International Business Times discovered after she tried sending an email to the Duggar family and got an automated response.

The Duggars first thanked Schumann for her support, adding that they are praying for each and every one of their fans. But as happy as they are to receive letters from fans, they apologised that they do not have the luxury of reading through all of their messages at once.

"We cannot always personally answer every email," the Duggars wrote. "But every email is reviewed and we pray for everyone who contacts us."

For invitations to grace public speaking events, the Duggars wrote that they are going to find a schedule "as soon as possible." But "unfortunately, due to the number of invitations and our schedule, we cannot entertain invitations to personal events such as birthday parties and weddings. We wish we could go to everything!" the family said.

The Duggars also promoted their books and their family blog. They also encouraged readers to check out the blogs started by the Dillard and Seewald families to see what their daughters Jill Dillard and Jessa Seewald are up to.

"Above all, remember that God loves you so very much. He gave his only son, Jesus, that you may know God personally, have forgiveness for your sins and gain eternal life. Nothing in life is as important as this!" the family wrote.

The Christian family is going to be even busier now that Jinger Duggar, the fourth eldest daughter, has gotten engaged to soccer player Jeremy Vuolo after several months of courtship. They haven't revealed yet when they will be tying the knot, but both the Duggar and Vuolo families are over the moon because of their coming union.