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.

! 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.

Chilkat POP3 ActiveX 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.

MailBell   
http://www.emtec.com

MailBell is a utility that assists you with your email. It periodically checks one or multiple email accounts (POP3, IMAP, POP3/IMAP-SSL, MAPI, Hotmail.com, MSN.com) and notifies you when new mail arrives (by playing a sound, showing a notification window). You can preview and even delete mail without actually downloading it into your mailprogram. Additionally MailBell offers functions to preview mail and to manually or automatically delete mail based on a list of kill-words or senders. This allows blocking of unwanted mail and deletion of mail with large attachments without actually downloading these mail into the mail program.