应用电子邮件中的Xcode添加“发件人”文本字段

Ok, so I have successfully made my first in-app Email app using MFMAilComposer. I have the toRecipients textfield added, as well as subject and body etc. So I understand that the email will not send if I use the simulator and will send with an iPhone. However, when a person receives the email, how is that person supposed to know whom he received it from? With this in mind, a "From" field should be in order. I appreciate all answers, and thanks in advance :)Ok, so I have successfully made my first in-app