One possible version
：
Dear Mr. Wu,
We have discussed whether Jim or Jane should be the volunteer for the event of the 2,500 th anniversary of the founding of Yangzhou City. Different groups have different recommendations. Jim and Jane are two candidates,
Group A of the class strongly recommend Jim. Because Jim is often praised by teachers for his excellent grades. Though a few words, he learns about the history of our Yangzhou City. Also he speaks English wonderfully.
However, Group B think Jane is better. It’s true that Jane’s Grades are not so good, but she is willing to do extra work for the class in her spare time.
In my opinion, I prefer Jane to be the volunteer. As we all know, a volunteer must be good at communication and be ready to devote his /her time to people in trouble. And Jane has the quality.
I hope my email will be of some value to you.
Yours sincerely,
Li Ping