Massmailer/Massmailer.Shared/Model/MassmailerRecipient.cs

using System;
using System.ComponentModel;

namespace Massmailer.Shared.Model
{
    public class MassmailerRecipient : INotifyPropertyChanged
    {
        private string address;
        private bool isSent;
        private DateTime sentDate;

        public string Address
        {
            get { return this.address; }
            set
            {
                this.address = value;
                this.PropertyChanged(this, new PropertyChangedEventArgs(nameof(this.Address)));
            }
        }

        public bool IsSent
        {
            get { return this.isSent; }
            set
            {
                this.isSent = value;
                this.PropertyChanged(this, new PropertyChangedEventArgs(nameof(this.IsSent)));
            }
        }

        public DateTime SentDate
        {
            get { return this.sentDate; }
            set
            {
                this.sentDate = value;
                this.PropertyChanged(this, new PropertyChangedEventArgs(nameof(this.SentDate)));
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }
}