If this is the case, the next step in the proposal email would be the go-ahead for you to create the letter of agreement. I'll discuss those in a future post. As with all business emails, make every sentence as concise as possible. Avoid jargon and biz-blab.
Universalism is a theological and philosophical concept with universal application or applicability. Universalist doctrines consider all people in their formation. In terms of religion, in a broad sense, universalism claims that religion is a universal human quality. This can be contrasted with non-universalist religions.
Unitarianism is a personal approach to religion that promotes religious freedom and is open to various beliefs. With around 800,000 followers worldwide, Unitarianism stresses the oneness of God and the unity of all humans.