Email Validator   
http://www.bytefoundry.com

Email Validator checks deliverability of email addresses. It does so by first performing a DNS query on the domain name of each email address in order to determine the address of the mail server servicing that domain. Once the mail server is found, a connection is made in the same way as your ISP's mail server would make a connection. Email validator will first attempt to use the SMTP VRFY command to determine deliverability. If the VRFY command is enabled, the mail server will report whether the email address being tested is in fact deliverable, Email Validator will then close the connection and report the result. In many cases the VRFY command is disabled on SMTP servers. If this is the case for any given mail server, Email Validator will then attempt to simulate the delivery of an email message. During this process, the mail server will report whether or not it can accept a message for the email address being tested. Once this is reported, Email Validator will close the connection and report the result. NO EMAIL IS ACTUALLY SENT. Email Validator never gets to that point, so the owner of the email address will not receive any message as a result. Once a list of email addresses has been tested, the user may export all addresses along with test results or simply export all deliverable or non-deliverable addresses in order to clean an existing list or build a new one containing only deliverable addresses. The result for anyone who runs a mailing list, i.e. ezine and newsletter publishers, businesses, political parties, non-profit organizations, etc. can save time and money by sending mail only to deliverable addresses and not have to clean delivery failure notices out of their inboxes.

Chilkat SMTP / POP3 ActiveX Email Component   
http://www.chilkatsoft.com

A POP3 / SMTP email ActiveX component for sending and receiving email. Packed with advanced features including: full S/MIME capability for sending and receiving signed and encrypted email, MHTML for sending HTML email with embedded images and style sheets, multipart/alternative, multipart/related, attachments, advanced AES encryption, automated international character encoding conversion, Outlook integration, progress monitoring, Outlook Express EML import, XML import and export, mail-merge, distribution lists, auto-Zip and Unzip attachments by integrating Chilkat Zip, Outlook contacts and distribution list integration, bad email address detection and collection, SMTP Windows Integrated Authorization, smart cards, SMTP and POP3 server diagnostics, full control over Cryptographic Service Providers for S/MIME, and more.

Chilkat WebMail ASP Email Component   
http://www.chilkatsoft.com

Powerful POP3/SMTP email client specifically tailored to be used in ASP websites. Features: Send Email (SMTP) Read Email (POP3) Attachments HTML Embedded Images Multipart/Alternative Multipart/Related S/MIME Signed Emails Encrypted Emails Export to XML Distribution Lists Save Attachments SMTP Auth Mail-Merge Filtering Headers Mailbox Management Server Diagnostics Forwarding Replying Return Receipt Charset Conversion

Corporate Mail Manager for Linux   
http://www.cm-manager.com

Corporate Mail Manager (CMM) enables the central distribution of commercial company communication via daily e-mail traffic. All outgoing e-mails of a company can be provided automatically with content like messages, product notes or current enterprise news. That’s signature marketing through the use of Corporate Mail Manager. Key Features: - Domain administration - Campaign administration - Replace keywords in outgoing e-mail with defined slogans - Attach automatically slogans to each outgoing e-Mail - Deliver e-mails without smart host - supports HTML and text e-mails - Edit advertising message with integrated WYSIWG HTML editor (NEW) - Upload your images into the integrated media database (NEW) - CMM server integrates images automatically in outgoing e-mails (NEW) - User administration (Admin / User) - Logging - Statistics over delivered /modified e-mails - SMTP configuration - CMM server configuration

Corporate Mail Manager for Windows   
http://www.cm-manager.com

Corporate Mail Manager (CMM) enables the central distribution of commercial company communication via daily e-mail traffic. All outgoing e-mails of a company can be provided automatically with content like messages, product notes or current enterprise news. That’s signature marketing through the use of Corporate Mail Manager. Key Features: - Domain administration - Campaign administration - Replace keywords in outgoing e-mail with defined slogans - Attach automatically slogans to each outgoing e-Mail - Deliver e-mails without smart host - supports HTML and text e-mails - Edit advertising message with integrated WYSIWG HTML editor (NEW) - Upload your images into the integrated media database (NEW) - CMM server integrates images automatically in outgoing e-mails (NEW) - User administration (Admin / User) - Logging - Statistics over delivered /modified e-mails - SMTP configuration - CMM server configuration