Email Saver Xe   
http://www.winguides.com

Email Saver Xe is a reliable and secure email backup utility for popular email clients including Microsoft Outlook, Outlook Express, Eudora, Opera and Netscape Messenger. Viruses, system crashes or power outages can quickly destroy or corrupt the messages and addresses in your email software; be prepared with regular backups! Not only does Email Saver Xe allow you to safely archive your messages but it can also backup your attachments, address book and contacts, users and accounts, message rules and filters, and many other settings and information. In addition to being a powerful backup utility you can also use Email Saver Xe to quickly transfer email information from one computer to another for simple Windows upgrades and migrations. And to ensure you are never caught without a recent copy of your email the automatic backup feature allows you to schedule regular unattended backups quietly in the background.

Simple System Tray IMAP Client   
http://www7.brinkster.com

This program includes a few interesting and useful technologies i.e. - A Simple System Tray IMAP Mail Client (not available so far) - System Tray Implementation in Visual C#.Net This includes source code, so you could use it as it is or play around with the code to satisfy your requirements. This requires .Net Framework to be installed first (I use v1.1). There is no installation required. Just copy the executable from bin\Release folder in the zip and run it. You should find the "My" icon in the System Tray. Double click to open main window. Chose IMAP Client from menu and enter user, password, IMAP Server and click Connect to check mail. Double click on SysTray icon to hide window. I made this software to serve as a personal utility for those features which are not available in the market. First one is the System Tray IMAP Client - It is very useful because I don't have to keep the Mail program open in the taskbar, there being no way to tell if there is new mail otherwise.

wodPop3Server   
http://www.weonlydo.com

WeOnlyDo! COM Pop3Server ActiveX control is a component that can be easily integrated into your applications to provide full Pop3 protocol server implementation. All you need to do is to put it on VB form, call it's Start method and it's immediately accepting connections by your clients! It fully supports commands defined in RFC1939. Use your favorite mail client (such as Outlook Express or Eudora) to read mail provided by your own application. How? That's easy part: just put wodPop3Server control on your form, add some code around and it's all setup to be used. If you dislike adding additional code - it's fine by wodPop3Server. It will still work, and reject all the clients (with bad username/password error). But, if you add login capabilities using 'Connected' event (that's easy part - set Action = Allow for specific username/password combination). Still, if you want to make real Pop3 server application, look no more for native support for socket related material - you just found it. wodPop3Server will deal with clients and connections - you must deal with messages. Once new user logs on to your Pop3 server, you need to provide any kind of information about his mail. This is really easy task. If you keep all the emails in separate files, that's just great for usage with wodPop3Server. If you prefer to keep it in one large file - we will not argue about it. You can specify filename, starting and ending position for each email in mailbox, and WeOnlyDo! Pop3Server will pass it to remote client with ease. However, you might have some small problems maintaining such mailbox since sometimes it needs to delete messages, change status, etc.. But don't worry - it all can be done after user logs off.

wodSmtp   
http://www.weonlydo.com

wodSmtp is activeX client component used to deliver email messages directly to the server of the recepient, using SMTP protocol. It automatically finds appropriate server where message should be delivered, or uses SmartHost through Hostname property. It includes several one-line methods for sending entire email (including attachments). It can also load prepared messages (created with Outlook, Outlook Express or any other client..), reformat it, change it's properties and send automatically. *supports both blocking and non-blocking operations *Can Automatically deliver message directly to users SMTP server *Has included DNS client to resolve addresses and domain names *Supports authentication with the server *Provides powerful set of properties that relate to messages-no need for external parsers or creators *Events for all major operations *Supports UNICODE in message headers *Supports attachments with BASE64, Binhex4, Quoted-printable and UU encoding *Save and Load messages for multi-session usage *Royalty free licencing *Easy usage

SocketTools Secure Visual Edition   
http://www.catalyst.com

SocketTools Secure Visual Edition is a collection of controls that supports secure data connections over the Internet or a local network. It includes client interfaces for Secure Sockets Layer (SSL) compliant versions of the Hypertext Transfer Protocol (HTTPS), File Transfer Protocol (FTPS), Simple Mail Transfer Protocol (SMTPS) and other popular application protocols PLUS all the standard Visual Edition components. Almost all details of the standard SSL protocol are hidden within the controls, enabling developers to produce secure client applications with only small additional considerations beyond those needed for non-secure versions of those same applications. All versions of Visual Basic from 5.0 and later are supported, and the ActiveX controls can be used with any 32-bit development tool that supports COM and the ActiveX control specification. The following protocols are supported by the SocketTools Secure Visual Edition: Domain Name Service (DNS), File Encoding and Compression, File Transfer Protocol (FTPS), Finger Protocol, Gopher Protocol, Hypertext Transfer Protocol (HTTPS), Internet Control Message Protocol (ICMP), Internet Message Access Protocol (IMAPS), Multipurpose Internet Mail Extensions (MIME), Network News Transfer Protocol (NNTPS), Network Time Protocol, Post Office Protocol (POP3S), Remote Access Services (RAS), Remote Command Protocol, Simple Mail Transfer Protocol (SMTPS), Terminal Emulation, Telnet Protocol, Whois Porotocol, Windows Sockets (SocketWrench).