PHP Email Validation - SMTP, MX Record and Regular Expression

PHP Email Verification is a simple PHP function that can be easily used to verify email addresses and ensure that they are valid and actually exist on the mail server.

In addition to checking the syntax, PHP Email Verification is also use MX-Records and Simple Mail Transfer Protocol (SMTP) to check the actual existence of an email address.

We sometimes need to verify the validation of a given email address. The simplest method we have is to send a verification email to the given email address and ask the user to click the link in that email. But in addition, we have three other methods, namely SMTP email verification, MX record checking, and regular expressions.

This php email validation script which validates email address using SMTP validation, mx record check and regular expression.

Regular Expression Check:
This is simple type of email validation and it's done in client side. This method doesn't check whether the email actually exist or not, but it simply checks given email is in standard form or not.

MX Record Check:
Usually a mail server is configured to process emails for a domain. MX Record holds ip address of that mail server, just like a pointer. So by checking MX Records we can make sure whether this domain can process emails or not.

This will avoid providing emails with fault domain names, like user@gmai.lcom etc. But still we aren't sure that the given email exist or not as we check only domain capabilities.

SMTP Email Validation:
SMTP Email Validation done by communicating mail server through SMTP commands such as HELO, RCPT To etc. You can learn more about SMTP commands here. By checking reply code from mail server we can make sure whether given email exist or not.

We follow below order in validating email:

1. Sender: HELLO! I'm the sending mail server.

2. Receiver: Hello, I'm the receiving mail server. Go ahead!

3. Sender: Mail from: Somebody

4. Receiver: OK, that's good.

5. Sender: Mail to: Somebody else

6. Receiver: Okay, that's fine

For each command listed above, we receive a status code from reply server. In step 6, if we receive reply code as 250, then we can assume that email was accepted and it is exist. Even if the reply code is 450 / 451, we can still think that email exist, because these codes were sent when there is a temporary error in MTA or email gray listed.

PHP Email Verification is a simple PHP function, after you buy it, you can copy and insert this function into your PHP script and get it work easily. If you have any question for this PHP script, please feel free to let us know, we are glad to assist you asap.

Write a review

Note: HTML is not translated!
    Bad           Good
Captcha

PHP Email Validation

  • Product Code: MOD211212092531
  • Availability: In Stock
  • Viewed: 11193
  • Sold By: PHP Studio
  • Seller Rating:
  • Seller Reviews: (0)
  • $19.95


Available Options


Related Products

PHP Invoice Generator

PHP Invoice Generator

PHP Invoice Generator - PHP Class For Beautiful PDF Invoices, it supports HTML Templates also. PH..

$49.95

PHP Login and User Management

PHP Login and User Management

PHP Login and User Management is an User Registration & Login and User Management System With Admin ..

$29.95

PHP FileManager

PHP FileManager

Digital Online File Manager is a Web Based File Manager which written in PHP. Manage Your Files Ef..

$29.95

PHP Web File Manager

PHP Web File Manager

PHP Web File Manager is a best and useful file manager for web, written in JavaScript using jQuery..

$59.95

PHP Email Extractor

PHP Email Extractor

PHP Email Extractor - the Best tool for extracting any email address. Extract email addresses from..

$19.95

Responsive Ajax Contact Form

Responsive Ajax Contact Form

PHP Contact Form - Modern & Responsive Contact FormPHP Contact Form uses JavaScript to send filled d..

$9.95

HTML5 PDF Annotator Source Code License

HTML5 PDF Annotator Source Code License

HTML5 PDF Annotation Source Code License HTML5 PDF Annotation is a HTML5 Based Document & Image Ann..

$6,500.00

Web Screenshot Capture Command Line with .NET and PHP Integration

Web Screenshot Capture Command Line with .NET and PHP Integration

Web Screenshot Capture Command Line allows you to take screenshots of web pages and save them as f..

$79.95

Web Crawler and Scraper for Emails, Links, Phone Numbers and Image URLs, PHP Source Code

Web Crawler and Scraper for Emails, Links, Phone Numbers and Image URLs, PHP Source Code

Web Crawler and Scraper for Emails, Links, Phone Numbers and Image URLs. Web Crawler and Scraper ..

$29.95

Email RSS Feeds as PDF Newspaper

Email RSS Feeds as PDF Newspaper

Convert RSS Feeds to PDF Newspaper with Email Subscription RSS Feeds To PDF Maker is a PHP Script..

$299.00

PHP File Integrity Checker

PHP File Integrity Checker

PHP File Integrity Checker is a File Integrity Monitoring Software which written in PHP Program La..

$49.95

Website Screenshot API for PHP

Website Screenshot API for PHP

Website Screenshot API (PHP Web Page Screenshot API) does capture screenshot of any webpage with o..

$59.95

PHP Booking and Appointment Scheduler

PHP Booking and Appointment Scheduler

PHP Appointment Scheduler is an online appointment scheduling software to boost sales and manage b..

$99.95

Tags: check checker, check email, email address, email verification, filter email, php email validation