Why am I gettting Error "Specified Method is not supported" when trying to send email?

Question

using System;
using System.Collections.Generic;
using System.Threading.Tasks;

using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using Xamarin.Essentials;

namespace SACerveceros
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class EmailTest : ContentPage
    {
        string subject = "subjecttest";
        string body = "bodytest";
        string recipientemailaddress = "******@sacerveceros.org";
        List<string> recipients = new List<string>();
        public EmailTest()
        {
            InitializeComponent();
            recipients.Add("******@sacerveceros.org");
            LabelEmail.Text = "Recipient: " + recipientemailaddress;
            LabelSubject.Text = "Subject: " + subject;
            LabelBody.Text = "Body: " + body;
        }

        private async Task SendEmail(string subject, string body, List<string> recipients)
        {
            try
            {
                var message = new EmailMessage
                {
                    Subject = subject,
                    Body = body,
                    To = recipients,
                };
                await Email.ComposeAsync(message);
            }
            catch (FeatureNotSupportedException fbsEx)
            {
                LabelError.Text = fbsEx.Message;
            }
            catch (Exception ex)
            {
                LabelError.Text = "Error: " + ex.Message;
            }
        }


        public void RecipientEmailaddress_Completed(object sender, EventArgs e)
        {
            recipientemailaddress = ((Entry)sender).Text;
            recipients.Add(recipientemailaddress);
            LabelEmail.Text = "Recipient: " + recipientemailaddress;

        }
        private void EmailSubject_Completed(object sender, EventArgs e)
        {
            subject = null;
            subject = ((Entry)sender).Text;
            LabelSubject.Text = "Subject: " + subject;
        }
        private void Emailbody_Completed(object sender, EventArgs e)
        {
            body += ((Entry)sender).Text;
            LabelBody.Text = "Body: " + body;
        }
        private void EnterButton_Clicked(object sender, EventArgs e)
        {
            LabelEmail.Text = "Recipient: " + recipientemailaddress;
            LabelSubject.Text = "Subject: " + subject;
            LabelBody.Text = "Body: " + body;
            SendEmail(subject, body, recipients);
        }
    }
}

Answer 1

Hello,​

I tried your code and I add <queries> tags to <manifest> tag in AndroidManifest.xml, it worked and will invoke email client to send a email.

If there is no email client installed that exception is thrown and expected. So please install email client in your device such as Outlook, etc.

Best Regards,

Leon Lu

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