easy2email ASP Email Component   
http://www.easy2email.com

Easy-to-use server side ActiveX email component to effortlessly send email through SMTP mail servers from ASP or ASP.NET web pages. Features quick implementation, SMTP authentication and COM+ integration. A quick test facility is included with the configuration application to test the component without writing a single line of source code. Email messages can be sent in plain text, HTML or other MIME formats. Additional features include multiple attachments, multiple recipients, multiple CC recipients and multiple BCC recipients. Activities can be logged to text file or through ADODB (MS Access, SQL Server etc.). Reference information (for instance an order no, transaction reference etc.) can be logged with each email sent. Flexible licensing options are available.

ANPOP POP3 Component Build   
http://www.emailarchitect.net

ANPOP is a high performance and easy-to-use POP3/IMAP4 component. It enables your ASP, VB, VC++, C#, VB.NET, ASP.NET, VBS, Jscript, WScript, Delphii or other COM environment application to retrieve email from email server using POP3 and IMAP4 protocols and parse email based on MIME. ANPOP supports all operations of POP3/IMAP4 protocol and provides many advanced features as follows: - Support POP3 commands: USER, PASS, APOP, NOOP, RSET, TOP, LIST, STAT,UIDL, RETR, QUIT; - Support synchronous and asynchronous mode; - Get email header without downloading the whole email from server; - Get email size/message-id from server; - Delete/Undelete email; - Log file to record all sessions between client and server; - Load email from file or binary stream; - Save email to file or IMSGSTORE interface; - Get specified header value of email; - Parse sender, recipients, subject, body and attachments; - Export attachment to file or binary stream; - Create customize mailbox to store email files; - Load email to IPOPMSG interface; - Save/Move/Delete/Enumerate emails in specified mailbox; - Create/Clear/Delete mailbox; - Send request of retrieving email to local/remote service; - Enable ASP/ASP.NET to retrieve emails in background; - Unlimited queued request; - Edit email headers; - Support SSL/TLS connection; - Support Secure Password Authentication(SPA); - Decrypt encrypted email and verify digital signature; - Support IPv6; - Support IMAP4; - and more.

ANSMTP SMTP Component Build   
http://www.emailarchitect.net

ANSMTP Object is a high performance, easy- to-use and full-featured SMTP COM Object (email component) which enables your ASP, VB, VC++, C#, VB.NET, ASP.NET, VBS, Jscript, WScript, Delphi or other COM environment application to send rich text/HTML email using the SMTP/ESMTP protocol. ANSMTP supports all operations of SMTP/ESMTP protocol and provides many advanced features as follows: - supportText/Html/Alternative body; - support Multiple attachments and embedded pictures; - import text/html to email body from specified file; - support "AUTH MSN" authentication. - add customized headers in email; - save email as specified file; - support normal recipient, carbon copy recipient and blind carbon copy recipient; - support ESMTP "AUTH LOGIN" authentication; - DNS lookup to send email without specified smtp server; -test validity of email address; - send email via queuing of IIS SMTP Service; - support Asynchronous mode and event driving; - support unlimited threads up to the limits of operating system; - smart Threadings-Pool which can automatically increase or decrease worker thread in need; - support SSL/TLS connection; - support signed and encrypted message; - support secure password authentication; - support IPv6; - and more. Though it is simple to use, many featured examples are provided in the download to get you started quickly. New features added in this version: - support "AUTH MSN" authentication. - support mail queuing with EASendMail Service (a tool for sending mass mail).

! Chilkat SMTP / POP3 Components   
http://www.chilkatsoft.com

A POP3 / SMTP ActiveX mail 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 POP3 ActiveX Control   
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.