MailTesterMailTester 
MailTester (MailTester.exe). MailTester is a powerful batch e-mail checking application.
MailTester is a robust batch email checking tool designed to streamline your email validation process. Whether you're working with Microsoft Excel, Microsoft Access, SQL Server, MySQL, or Oracle databases, this app makes it easy to manage and validate email addresses efficiently.
Simply select the database table, choose the field containing the email addresses to check, and specify where to store the email status. With MailTester, you can quickly handle large datasets, ensuring your email lists are accurate and up to date.