What's the point of a teapot?

Steeping tea in a teapot can improve the final flavor. This is because teapots tend to retain heat better, provide more oxygen for tea leaves, and regulate the steeping process, all of which create a better-tasting result. 

A tea’s flavor and depth is dependent on a number of factors that a teapot can help you to control. Some of the factors include:

• The material of the steeping container
• The amount of oxygen the tea is exposed to
• The type of tea used (“true,” herbal, infusion, etc.)
• The steeping temperature and time