No, it is not appropriate at all to clap. This transforms the Mass, giving it the atmosphere of entertainment like in a theater or a very worldly and informal atmosphere. It is unworthy of the public worship of God. It should not be done at all.
Dear visitors of Gloria Dei and all who have already written or who will write a personal message to me. I am grateful for your attention, your kindness, for your spiritual support and especially for your sacrifices and prayers for me. God may reward you!