MailBee IMAP4   
http://www.afterlogic.com

MailBee IMAP4 is a powerful and easy to use COM object which enables ASP and Windows applications to search, receive and manage mail on IMAP servers. New/unread message search, envelopes, body structures, correct and fast MIME parser, mailbox and message management, and much more. Can be used in conjunction with SMIME, SSL, SMTP and MessageCensor components. Royalty-free distribution.

MailBee Message Queue   
http://www.afterlogic.com

MailBee Message Queue is a queue-based email-sending system that operates as a Windows NT service intercepting "send e-mail" requests from MailBee.SMTP objects and then sends email in a background. This allows MailBee.SMTP object to operate very quickly because MailBee.SMTP object is no longer waits for the email message to be actually sent. It is especially important when your application or ASP web page sends multiple messages at once. New version adds capabitlity to send multiple messages simultaneously.

MailBee IMAP4   
http://www.iforum.com

MailBee IMAP4 is a powerful and easy to use COM object which enables ASP and Windows applications to search, receive and manage mail on IMAP servers. New/unread message search, envelopes, body structures, correct and fast MIME parser, mailbox and message management, and much more. Can be used in conjunction with SSL, SMTP and MessageCensor components. Royalty-free distribution.

MessageLock for Outlook 2003   
http://www.encryptomatic.com

Your private email message are not so private. When attached to an email, your files (pictures, documents, videos, etc) and message may as well be printed on a postcard as they travel across the internet to their intended recipient. History has proven that unsecured messages can be intercepted, redistributed, published, and tampered with, sometimes with serious consequences. Introducing MessageLock(TM) by Encryptomatic llc - Quite possibly the world's easiest to use sender-to-recipient email security solution. MessageLock provides 1-click encryption of email messages and attachments within Microsoft Outlook, combining strong U.S. Gov't approved AES-256 bit encryption with the nearly universal compatibility of the Zip file utlity. MessageLock delivers encryption and compression for your message and/or file attachments, protecting your data while it is traveling across your intranet and the internet. MessageLock gives you a choice of encryption methods, from super-strong AES-256 bit, to AES-128 bit, and the weak but highly compatible Zip-2.0 algorithm. To use MessageLock, all you do is associate an email address with a password, a process that takes just seconds. Or, just go ahead and send an encrypted email -- if MessageLock can't find the password to use, it will ask you for a password and then remember it for the next you send to this email address. If MessageLock is installed at receivers end, the message can be decrypted immediately upon receipt and displayed as a regular message. The only difference is a single line of text at the bottom of the message that alerts the reader that this message was transmitted securely. If the receiver does not have MessageLock, they can still decrypt the zip file if they have the password, and any zip utility that supports the encryption method used. WinZip 10.0 or the free TugZip utility can both decrypt AES-256. Download a fully functional trial and see how easy MessageLock is to use.

CastleMail   
http://www.CastleSoftware.biz

CastleMail is a powerful, yet simple to use, email application which helps you send personalized emails to your customers and / or newsletter subscribers. Easily send personalized email newsletters, product update information, client notifications using message templates. Send plain text and / or HTML formatted messages with any number of embedded replacement fields which are substituted for each message sent. For example, substitute your customer's first name into the email automatically before it is sent. Create reusable message templates which you can load at the click of a button. Import unlimited group lists with personal details such as first name and company name. Define and maintain multiple profiles, each with its own From name, email address, SMTP server, server port and HELO name. No need to CC a long list of people - each person gets their own individually personalized copy of the email. CastleMail uses the SMTP server of your choice - for example, your ISPs SMTP server. If you want a fast, free SMTP server to run on your PC, we recommend that you have a look at the free version of PostCast Server.