Pivo SMTP Component   
http://www.pivo.com

Short for Simple Mail Transfer Protocol, a protocol for sending e-mail messages between servers. Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another; the messages can then be retrieved with an e-mail client using either POP or IMAP. In addition, SMTP is generally used to send messages from a mail client to a mail server. This is why you need to specify both the POP or IMAP server and the SMTP server when you configure your e-mail application. Pivo Smtp Component is one which can be used in web/window application like C#,ASP.NET, VB, smpt component allows your applications or web pages to create and send email messages over SMTP protocol just in a few lines of code. Sends messages as plain text or in the HTML format. Smtp Component can send email to any email address with or without smtp server as parameter. Email can contain any number of attachments, unlimited recipients, cc's and bcc's. Send Email directly from you web page via applications/browsers.

Pivo pop3 Component   
http://www.pivo.com

A high performance POP3 component enables ASP/ VB/ VC++/ C#/ VB.NET/ ASP.NET or other COM environment applications to retrieve email from mail server based on POP3 protocol. Pivo POP3 Object supports all operations. It also provides advanced features such as retrieve emails in background, capability of unlimited queued request. POP3 is a widely-deployed mail access protocol. Many programs access POP3 message stores, and thus need POP3 configuration information. Since there are multiple configuration elements which are required in order to access a mailbox, a single string representation is convenient. A POP3 mailbox (like an [IMAP4] mailbox) is a network resource, and URLs are a widely-supported generalized representation of network resources.A means of specifying a POP3 mailbox as a URL will likely be useful in many programs and protocols.

Pivo Email Validator Component   
http://www.pivo.com

Having problems with the email addresses in your mailing list?Are you tired of getting bounce backs every time you perform a mailing? Email Validator will solve your email validation problems. Email Validator is an assembly that requires the Microsoft .NET framework to run. It is used to validate email addresses at different levels. Email Validator does not have a GUI front end, it is a server component that can only be accessed programmatically. Email Validator can be used on signup forms or it can validate huge lists of email addresses from one address to million. Email Validator validates email addresses at four different levels. Syntax, Domain, SMTP, and Mailbox levels. To validate an email address, simply create the EmailValidator object, pass it the email address and the level of validation to check, and Email Validator will do the rest. For some code examples on how to use Email Validator, click here. Email Validator does not actually send an email, but it can check the remote mail server to see if the server will accept an email for that address. The only way to truly check to see if an email address is valid, is to send an email. Here's a more detailed explanation of the 4 levels of validation provided by Email Validator.

MailBee SMTP   
http://www.iforum.com

MailBee SMTP is a powerful and easy to use COM object which enables ASP and Windows applications to create, send and queue mail to SMTP servers. Secure authentication, email validation, correct MIME composer, multiple attachments, and much more. Can be used in conjunction with SSL, POP3 and IMAP4 components. Royalty-free distribution.

MailBee POP3   
http://www.iforum.com

MailBee POP3 is a powerful and easy to use COM object which enables ASP and Windows applications to receive, parse and delete mail from POP3 servers. Secure authentication, HTML mails, smart and fast MIME parser, email safety, and much more. Can be used in conjunction with SSL, SMTP and MessageCensor components. Royalty-free distribution.