.NET Library | MailboxValidator

Overview

This .NET library provides an easy way to call the MailboxValidator API which validates if an email address is a valid one.

NOTE: An API key will be given to you when you signup for any of our API plans. This library will require that API key to function.

NuGet:

https://www.nuget.org/packages/MailboxValidator.SingleValidation/

GitHub Repository (VB.NET):

https://github.com/MailboxValidator/mailboxvalidator-vbnet

GitHub Repository (C#):

https://github.com/MailboxValidator/mailboxvalidator-csharp

Installation via NuGet Package Manager

Install-Package MailboxValidator.SingleValidation

To validate an email address

Imports System.Text
Imports Microsoft.VisualStudio.TestTools.UnitTesting

 Public Class TestMailboxValidatorVB

     Public Sub TestMethod1()
        Dim mbv = New MailboxValidator.SingleValidation("PASTE_YOUR_API_KEY_HERE")
        Dim results As String = ""
        Try
            Dim rec = mbv.ValidateEmail("example@example.com")

            If rec.ErrorCode = "" Then
                results += "email_address: " & rec.EmailAddress & vbCrLf
                results += "domain: " & rec.Domain & vbCrLf
                results += "is_free: " & rec.IsFree & vbCrLf
                results += "is_syntax: " & rec.IsSyntax & vbCrLf
                results += "is_domain: " & rec.IsDomain & vbCrLf
                results += "is_smtp: " & rec.IsSMTP & vbCrLf
                results += "is_verified: " & rec.IsVerified & vbCrLf
                results += "is_server_down: " & rec.IsServerDown & vbCrLf
                results += "is_greylisted: " & rec.IsGreylisted & vbCrLf
                results += "is_disposable: " & rec.IsDisposable & vbCrLf
                results += "is_suppressed: " & rec.IsSuppressed & vbCrLf
                results += "is_role: " & rec.IsRole & vbCrLf
                results += "is_high_risk: " & rec.IsHighRisk & vbCrLf
                results += "is_catchall: " & rec.IsCatchall & vbCrLf
                results += "mailboxvalidator_score: " & rec.MailboxValidatorScore & vbCrLf
                results += "time_taken: " & rec.TimeTaken & vbCrLf
                results += "status: " & rec.Status & vbCrLf
                results += "credits_available: " & rec.CreditsAvailable & vbCrLf
            Else
                results += "error_code: " & rec.ErrorCode & vbCrLf
                results += "error_message: " & rec.ErrorMessage & vbCrLf
            End If

            results += "version: " & rec.Version & vbCrLf
            MsgBox(results)
        Catch ex As Exception
            MsgBox(ex.Message & vbCrLf & ex.StackTrace)
        End Try
    End Sub

End Class

To check if an email is from a disposable email provider

Imports System.Text
Imports Microsoft.VisualStudio.TestTools.UnitTesting

 Public Class TestMailboxValidatorVB

     Public Sub TestMethod1()
        Dim mbv = New MailboxValidator.SingleValidation("PASTE_YOUR_API_KEY_HERE")
        Dim results As String = ""
        Try
            Dim rec = mbv.DisposableEmail("example@example.com")

            If rec.ErrorCode = "" Then
                results += "email_address: " & rec.EmailAddress & vbCrLf
                results += "is_disposable: " & rec.IsDisposable & vbCrLf
                results += "credits_available: " & rec.CreditsAvailable & vbCrLf
            Else
                results += "error_code: " & rec.ErrorCode & vbCrLf
                results += "error_message: " & rec.ErrorMessage & vbCrLf
            End If

            results += "version: " & rec.Version & vbCrLf
            MsgBox(results)
        Catch ex As Exception
            MsgBox(ex.Message & vbCrLf & ex.StackTrace)
        End Try
    End Sub

End Class

To check if an email is from a free email provider

Imports System.Text
Imports Microsoft.VisualStudio.TestTools.UnitTesting

 Public Class TestMailboxValidatorVB

     Public Sub TestMethod1()
        Dim mbv = New MailboxValidator.SingleValidation("PASTE_YOUR_API_KEY_HERE")
        Dim results As String = ""
        Try
            Dim rec = mbv.FreeEmail("example@example.com")

            If rec.ErrorCode = "" Then
                results += "email_address: " & rec.EmailAddress & vbCrLf
                results += "is_free: " & rec.IsFree & vbCrLf
                results += "credits_available: " & rec.CreditsAvailable & vbCrLf
            Else
                results += "error_code: " & rec.ErrorCode & vbCrLf
                results += "error_message: " & rec.ErrorMessage & vbCrLf
            End If

            results += "version: " & rec.Version & vbCrLf
            MsgBox(results)
        Catch ex As Exception
            MsgBox(ex.Message & vbCrLf & ex.StackTrace)
        End Try
    End Sub

End Class

To validate an email address

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Windows.Forms;
using MailboxValidator;

namespace TestMailboxValidatorCSharp
{
    [TestClass]
    public class TestMailboxValidatorCSharp
    {
        [TestMethod]
        public void TestMethod1()
        {
            var mbv = new SingleValidation("PASTE_YOUR_API_KEY_HERE");
            String results = "";
            try
            {
                MBVResult rec = mbv.ValidateEmail("example@example.com");

                if (rec.ErrorCode == "")
                {
                    results += "email_address: " + rec.EmailAddress + "\n";
                    results += "domain: " + rec.Domain + "\n";
                    results += "is_free: " + rec.IsFree + "\n";
                    results += "is_syntax: " + rec.IsSyntax + "\n";
                    results += "is_domain: " + rec.IsDomain + "\n";
                    results += "is_smtp: " + rec.IsSMTP + "\n";
                    results += "is_verified: " + rec.IsVerified + "\n";
                    results += "is_server_down: " + rec.IsServerDown + "\n";
                    results += "is_greylisted: " + rec.IsGreylisted + "\n";
                    results += "is_disposable: " + rec.IsDisposable + "\n";
                    results += "is_suppressed: " + rec.IsSuppressed + "\n";
                    results += "is_role: " + rec.IsRole + "\n";
                    results += "is_high_risk: " + rec.IsHighRisk + "\n";
                    results += "is_catchall: " + rec.IsCatchall + "\n";
                    results += "mailboxvalidator_score: " + rec.MailboxValidatorScore + "\n";
                    results += "time_taken: " + rec.TimeTaken + "\n";
                    results += "status: " + rec.Status + "\n";
                    results += "credits_available: " + rec.CreditsAvailable + "\n";
                }
                else
                {
                    results += "error_code: " + rec.ErrorCode + "\n";
                    results += "error_message: " + rec.ErrorMessage + "\n";
                }

                results += "version: " + rec.Version + "\n";
                MessageBox.Show(results);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + "\n" + ex.StackTrace);
            }
        }
    }
}

To check if an email is from a disposable email provider

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Windows.Forms;
using MailboxValidator;

namespace TestMailboxValidatorCSharp
{
    [TestClass]
    public class TestMailboxValidatorCSharp
    {
        [TestMethod]
        public void TestMethod1()
        {
            var mbv = new SingleValidation("PASTE_YOUR_API_KEY_HERE");
            String results = "";
            try
            {
                MBVResult rec = mbv.DisposableEmail("example@example.com");

                if (rec.ErrorCode == "")
                {
                    results += "email_address: " + rec.EmailAddress + "\n";
                    results += "is_disposable: " + rec.IsDisposable + "\n";
                    results += "credits_available: " + rec.CreditsAvailable + "\n";
                }
                else
                {
                    results += "error_code: " + rec.ErrorCode + "\n";
                    results += "error_message: " + rec.ErrorMessage + "\n";
                }

                results += "version: " + rec.Version + "\n";
                MessageBox.Show(results);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + "\n" + ex.StackTrace);
            }
        }
    }
}

To check if an email is from a free email provider

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Windows.Forms;
using MailboxValidator;

namespace TestMailboxValidatorCSharp
{
    [TestClass]
    public class TestMailboxValidatorCSharp
    {
        [TestMethod]
        public void TestMethod1()
        {
            var mbv = new SingleValidation("PASTE_YOUR_API_KEY_HERE");
            String results = "";
            try
            {
                MBVResult rec = mbv.FreeEmail("example@example.com");

                if (rec.ErrorCode == "")
                {
                    results += "email_address: " + rec.EmailAddress + "\n";
                    results += "is_free: " + rec.IsFree + "\n";
                    results += "credits_available: " + rec.CreditsAvailable + "\n";
                }
                else
                {
                    results += "error_code: " + rec.ErrorCode + "\n";
                    results += "error_message: " + rec.ErrorMessage + "\n";
                }

                results += "version: " + rec.Version + "\n";
                MessageBox.Show(results);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + "\n" + ex.StackTrace);
            }
        }
    }
}

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