Rock.Communication.Email.Send C# (CSharp) Method

        public static void Send( Guid emailTemplateGuid, List<RecipientData> recipients, string appRoot = "", string themeRoot = "", bool createCommunicationHistory = true )
        {
            try
            {
                if ( recipients != null && recipients.Any() )
                {

                    var mediumEntity = EntityTypeCache.Read( Rock.SystemGuid.EntityType.COMMUNICATION_MEDIUM_EMAIL.AsGuid() );
                    if ( mediumEntity != null )
                    {
                        var medium = MediumContainer.GetComponent( mediumEntity.Name );
                        if ( medium != null && medium.IsActive )
                        {
                            var transport = medium.Transport;
                            if ( transport != null && transport.IsActive )
                            {
                                using ( var rockContext = new RockContext() )
                                {
                                    var template = new SystemEmailService( rockContext ).Get( emailTemplateGuid );
                                    if ( template != null )
                                    {
                                        try
                                        {
                                            if ( transport is Rock.Communication.Transport.SMTPComponent )
                                            {
                                                ( (Rock.Communication.Transport.SMTPComponent)transport ).Send( template, recipients, appRoot, themeRoot, createCommunicationHistory );
                                            }
                                            else
                                            {
                                                transport.Send( template, recipients, appRoot, themeRoot );
                                            }
                                        }
                                        catch ( Exception ex1 )
                                        {
                                            throw new Exception( string.Format( "Error sending System Email ({0}).", template.Title ), ex1 );
                                        }
                                    }
                                    else
                                    {
                                        throw new Exception( string.Format( "Error sending System Email: An invalid System Email Identifier was provided ({0}).", emailTemplateGuid.ToString() ) );
                                    }
                                }
                            }
                            else
                            {
                                throw new Exception( string.Format( "Error sending System Email: The '{0}' medium does not have a valid transport, or the transport is not active.", mediumEntity.FriendlyName ) );
                            }
                        }
                        else
                        {
                            throw new Exception( string.Format( "Error sending System Email: The '{0}' medium does not exist, or is not active (type: {1}).", mediumEntity.FriendlyName, mediumEntity.Name ) );
                        }
                    }
                    else
                    {
                        throw new Exception( "Error sending System Email: Could not read Email Medium Entity Type" );
                    }
                }
            }
            catch ( Exception ex )
            {
                ExceptionLogService.LogException( ex, HttpContext.Current );
            }
        }

        protected void btnSend_Click( object sender, EventArgs e )
        {
            PersonService personService = new PersonService();

            var mergeObjects = new List<object>();

            var values = new Dictionary<string, string>();
            values.Add( "ConfirmAccountUrl", RootPath + "ConfirmAccount" );
            mergeObjects.Add( values );

            Dictionary<object, List<object>> personObjects = new Dictionary<object, List<object>>();

            foreach(Person person in personService.GetByEmail(tbEmail.Text))
            {
                var userObjects = new List<object>();

                UserService userService = new UserService();
                foreach ( User user in userService.GetByPersonId( person.Id ) )
                    if ( user.AuthenticationType != AuthenticationType.Facebook )
                        userObjects.Add( user );

                if ( userObjects.Count > 0 )
                    personObjects.Add( person, userObjects );
            }

            if ( personObjects.Count > 0 )
            {
                mergeObjects.Add( personObjects );

                var recipients = new Dictionary<string, List<object>>();
                recipients.Add( tbEmail.Text, mergeObjects );

                Email email = new Email( Rock.SystemGuid.EmailTemplate.SECURITY_FORGOT_USERNAME );
                SetSMTPParameters( email );
                email.Send( recipients );

                pnlEntry.Visible = false;
                pnlSuccess.Visible = true;
            }
            else
                pnlWarning.Visible = true;
        }