#1
Asp.Net Mass eMails Checker
Note: Source Code Is Included. Asp.Net Mass eMails Checker is a simple & easy-use web app that allows you to verify email addresses without storing anything in any databases. It extracts the MX records from the email address and connects to the mail server (over SMTP and also simulates sending a message) to make sure the mailbox really exists for that user/address.
#2
Super eMail Validator (Source Code Included)
**Some mail servers(see the section below to see some of the unsupported Email Providers) do not cooperate the verification process with the MX records, in such cases, the result of this email verification tool may not be as accurate as expected (1% error margin).
#3
Email Verifier Pro - Bulk Email Addresses Validation, Mail Sender & Email Lead Management Tool
Email Verifier Pro is a professional tool which allows you to do verifying bulk list of email addresses and validating them in a background email scanning process and shows scan results with an easy to read report divided into multiple categories like valid, invalid, duplicates, unknown, syntax error addresses. All verified clean email address can be downloaded as CSV or save a clean list in the database for later use from lead management. Which can be used for sending bulk emails to your clients and customers for email marketing purpose.