Compose an effective e-mail to your professor informing him or her that you will not be able to ...

Dear Professor Harrington,
I am writing this e-mail to inform you that due to a family emergency, I will not be able to attend class today. I know that attending class is very important and I will be getting notes from a classmate. I will also complete the activities that were listed on the syllabus. If I have any questions about the content, I'll come to your office hour on Thursday. I've attached my writing assignment that is due today. Thanks in advance for your understanding,
Sincerely,
Ashley Smith
PSY 123-01 M W 9:30 -11:00