显示FacesMessage并在JSF中重新加载页面

我正在从JSF应用程序发送电子邮件。我需要它，以便在发送电子邮件时显示FacesMessage确认操作，然后浏览器重新加载到同一页面。我拥有的代码显示了面孔，但没有重新加载同一页面。

public String sendEmail(){
//Email Sending Code.....
 Transport.send(message);

            FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,
                    "Successfull\n", "You have successfully sent an e-mail to : " + e_mail + ". \n Thank You"));

            return "Email?redirect-true";
}

这是我尝试过的内容，此代码重新加载了页面，但未显示FacesMessage。

public String sendEmail(){
    //Email Sending Code.....
     Transport.send(message);

                FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,
                        "Successfull\n", "You have successfully sent an e-mail to : " + e_mail + ". \n Thank You"));
                 FacesContext context = FacesContext.getCurrentInstance();
            HttpServletRequest origRequest = (HttpServletRequest) context.getExternalContext().getRequest();
            String contextPath = origRequest.getContextPath();
            FacesContext.getCurrentInstance().getExternalContext().redirect(contextPath + "/faces/Email.xhtml");
                return "Email?redirect-true";
    }

这是我发送电子邮件页面的代码：

    <h:form >
            <p:growl id="growl" showDetail="true"/>
            <p:panel header="Send Email" style=" width: 70%">
                <h:panelGrid columns="2"> 
                    <h:outputLabel value="E Mail Address: " />
                    <h:inputText value="#{mailing.e_mail}" style="width: 400px"/>

                    <h:outputText value="Subject: " /> 
                    <h:inputText value="#{mailing.subject}" style="width: 400px"/>

                    <h:outputText value="Message: " />
                    <h:inputTextarea value="#{mailing.mess}" style="height: 300px;width: 700px"/>
                    <h:panelGroup/>
                    <p:commandButton
                        value="Send Mail "
                        action="#{mailing.sendEmail()}"
                        ajax="false"/>
                </h:panelGrid> 
            </p:panel>
        </h:form>

请帮忙