MailboxValidator.SingleValidation 2.0.0

MailboxValidator VB.NET Libary

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

This library can be used in many types of projects such as:

• validating a user's email during sign up
• cleaning your mailing list prior to an email marketing campaign
• a form of fraud check

Compilation

Just open the solution file in Visual Studio 2022 or later and compile:

Dependencies

An API key is required for this library to function.

Go to https://www.mailboxvalidator.com/plans#api to sign up for a FREE API plan and you'll be given an API key.

Usage for validating emails

Imports Newtonsoft.Json

Module Program
    Sub Main(args As String())
        Dim apikey = "PASTE_YOUR_API_KEY_HERE"
        Dim email = "example@example.com"
        Dim mbv As New MailboxValidator.SingleValidation(apikey)

        Dim mytask = mbv.ValidateEmailAsync(email) ' async API Call
        Dim myobj = mytask.Result

        Console.WriteLine(JsonConvert.SerializeObject(myobj, Formatting.Indented)) ' to pretty-print the JSON

        Console.WriteLine("email_address:" & myobj("email_address").ToString)
        Console.WriteLine("domain:" & myobj("domain").ToString)
        Console.WriteLine("is_free:" & myobj("is_free").ToString)
        Console.WriteLine("is_syntax:" & myobj("is_syntax").ToString)
        Console.WriteLine("is_domain:" & myobj("is_domain").ToString)
        Console.WriteLine("is_smtp:" & myobj("is_smtp").ToString)
        Console.WriteLine("is_verified:" & myobj("is_verified").ToString)
        Console.WriteLine("is_server_down:" & myobj("is_server_down").ToString)
        Console.WriteLine("is_greylisted:" & myobj("is_greylisted").ToString)
        Console.WriteLine("is_disposable:" & myobj("is_disposable").ToString)
        Console.WriteLine("is_suppressed:" & myobj("is_suppressed").ToString)
        Console.WriteLine("is_role:" & myobj("is_role").ToString)
        Console.WriteLine("is_high_risk:" & myobj("is_high_risk").ToString)
        Console.WriteLine("is_catchall:" & myobj("is_catchall").ToString)
        Console.WriteLine("mailboxvalidator_score:" & myobj("mailboxvalidator_score").ToString)
        Console.WriteLine("time_taken:" & myobj("time_taken").ToString)
        Console.WriteLine("status:" & myobj("status").ToString)
        Console.WriteLine("credits_available:" & myobj("credits_available").ToString)
    End Sub
End Module

Functions

SingleValidation(api_key)

Creates a new instance of the MailboxValidator object with the API key.

ValidateEmailAsync(email_address)

Performs email validation on the supplied email address.

Result Fields

email_address

The input email address.

domain

The domain of the email address.

is_free

Whether the email address is from a free email provider like Gmail or Hotmail.

Return values: True, False

is_syntax

Whether the email address is syntactically correct.

Return values: True, False

is_domain

Whether the email address has a valid MX record in its DNS entries.

Return values: True, False, -   (- means not applicable)

is_smtp

Whether the mail servers specified in the MX records are responding to connections.

Return values: True, False, -   (- means not applicable)

is_verified

Whether the mail server confirms that the email address actually exist.

Return values: True, False, -   (- means not applicable)

is_server_down

Whether the mail server is currently down or unresponsive.

Return values: True, False, -   (- means not applicable)

is_greylisted

Whether the mail server employs greylisting where an email has to be sent a second time at a later time.

Return values: True, False, -   (- means not applicable)

is_disposable

Whether the email address is a temporary one from a disposable email provider.

Return values: True, False, -   (- means not applicable)

is_suppressed

Whether the email address is in our blacklist.

Return values: True, False, -   (- means not applicable)

is_role

Whether the email address is a role-based email address like admin@example.net or webmaster@example.net.

Return values: True, False, -   (- means not applicable)

is_high_risk

Whether the email address contains high risk keywords.

Return values: True, False, -   (- means not applicable)

is_catchall

Whether the email address is a catch-all address.

Return values: True, False, Unknown, -   (- means not applicable)

mailboxvalidator_score

Email address reputation score.

Score > 0.70 means good; score > 0.40 means fair; score ⇐ 0.40 means poor.

time_taken

The time taken to get the results in seconds.

status

Whether our system think the email address is valid based on all the previous fields.

Return values: True, False

credits_available

The number of credits left to perform validations.

Usage for checking if an email is from a disposable email provider

Imports Newtonsoft.Json

Module Program
    Sub Main(args As String())
        Dim apikey = "PASTE_YOUR_API_KEY_HERE"
        Dim email = "example@example.com"
        Dim mbv As New MailboxValidator.SingleValidation(apikey)

        Dim mytask = mbv.DisposableEmailAsync(email) ' async API Call
        Dim myobj = mytask.Result

        Console.WriteLine(JsonConvert.SerializeObject(myobj, Formatting.Indented)) ' to pretty-print the JSON

        Console.WriteLine("email_address:" & myobj("email_address").ToString)
        Console.WriteLine("is_disposable:" & myobj("is_disposable").ToString)
        Console.WriteLine("credits_available:" & myobj("credits_available").ToString)
    End Sub
End Module

Functions

SingleValidation(api_key)

Creates a new instance of the MailboxValidator object with the API key.

DisposableEmailAsync(email_address)

Check if the supplied email address is from a disposable email provider.

Result Fields

email_address

The input email address.

is_disposable

Whether the email address is a temporary one from a disposable email provider.

Return values: True, False

credits_available

The number of credits left to perform validations.

Usage for checking if an email is from a free email provider

Imports Newtonsoft.Json

Module Program
    Sub Main(args As String())
        Dim apikey = "PASTE_YOUR_API_KEY_HERE"
        Dim email = "example@example.com"
        Dim mbv As New MailboxValidator.SingleValidation(apikey)

        Dim mytask = mbv.FreeEmailAsync(email) ' async API Call
        Dim myobj = mytask.Result

        Console.WriteLine(JsonConvert.SerializeObject(myobj, Formatting.Indented)) ' to pretty-print the JSON

        Console.WriteLine("email_address:" & myobj("email_address").ToString)
        Console.WriteLine("is_free:" & myobj("is_free").ToString)
        Console.WriteLine("credits_available:" & myobj("credits_available").ToString)
    End Sub
End Module

Functions

SingleValidation(api_key)

Creates a new instance of the MailboxValidator object with the API key.

FreeEmailAsync(email_address)

Check if the supplied email address is from a free email provider.

Result Fields

email_address

The input email address.

is_free

Whether the email address is from a free email provider like Gmail or Hotmail.

Return values: True, False

credits_available

The number of credits left to perform validations.

Copyright

Copyright (C) 2023 by MailboxValidator.com, support@mailboxvalidator.com